Heck, how many people even remember the Boxing Day 2004 tsunami, despite the fact that the death toll was almost a quarter million?
I think you need to think about this question a bit harder.
Because the answer is probably "billions of people", given that it happened in Asia. If the same thing happened in the Atlantic, and Northern Europe and America's East Coast and the North coast of Africa lost 250k people, you wouldn't be asking this question. I mean the US is still obsessed with an event where 5k people died, let alone 250k people.
What you're actually serving to do here is prove the opposite of your point - that the MCU is actually extremely unrealistic in terms of how it shows people instantly forgetting stuff. The invasion of NY in Avengers 1 would still be hugely discussed and thought about a couple of decades later. The Blip would be all anyone ever talked about for a generation, essentially. I'm not saying they're wrong to avoid that, but I am saying they write themselves into these holes for no real reason, and people can pretend it has no consequences on their success but I don't think the evidence supports that.
(Also let's not even get into the physics that kind of displacement that hand emerging would cause - it would be an Extinction Level Event scenario, with repeatedly reflecting tsunamis which wiped out large sections of entire continents - and not just in Asia - not a quarter of a million people, horrifying as that number is - more likely hundreds of millions to billions. Indeed there's a recent TV show which I won't name for spoiler reasons which demonstrates what that might look like.)
The point is, most viewers don't care. And if they don't care, expecting the creators to is a serious reach.
What's weird to me is that the creators clearly do care, and keep creating these situations, and bringing them up when they could let viewers forget or assume something was retcon'd. It's weird - like, just don't write yourself into an odd and unnecessary corner like that! Or if you do, pick a lane and either engage with it, or avoid it and just let it lie. Don't like, bring it up a little bit repeatedly and half-heartedly! That's the worst of both worlds!
On the main topic:
A strong episode today, with continued really good acting and emotional scenes as the main strong point of the show (which generally requires and clearly has decent directing to back it up).
Not a huge amount of development plot-wise, just a lot of character development. One thing that's a bit confusing is that it seems to be set immediately after the previous episode, but also in some cases it seems like significant time has passed - like DD searches the crime scene and finds a bullet casing (which presumably would have been swept away by rain etc. if much time had passed), but also his relationship with the therapist (errr sorry if I have her job title wrong) seems to have advanced to "staying at his house most nights", which seems like for people like them would probably take a few weeks. A lot of other stuff also feels like time has passed. Not really a criticism, it just stuck out at me as a little odd.
In fact my only criticism is I'm finding the "BB" segments increasingly tiresome, with this very hackneyed cast of unwholesome New York stereotypes with crappy opinions/ideas, like does she only interview the same six ill-educated and not-very-bright loudmouth jerks over and over and over and over? I mean, I'm not saying people wouldn't watch that - they might (normally such scenarios involve theoretically "attractive" people though) - but it's not a great sort of interstitial and kind of projects a weirdly '90s vision of New York. I feel like they're trying to do a sort of "Humans of New York" thing but it's not working because most of them are so charmless and it's the same people over and over, rather than being this wild cross section of one of the more diverse cities in the world (I mean, not London levels of diverse, but close, he said, Londoner-ly).
(I was also slightly saddened by the basic-ness of Kingpin eating a frankly gross-looking meal next to shrieking Adam also, like, come on, I know you guys could have come up with a smarter or more effective scene than this practically gothic deal. Though if it heralds a return of gothic elements to the show generally, great! I kind of miss how gothic S1 of Daredevil was. But I couldn't get over how gross and weirdly British his meal looked with those stupid sausages lol. Like what is this, Italian-British fusion? Bangers and Penne? I'm sure it's a real Italian-American thing but you so rarely see that kind of sausage in the US that it was very funny to me, which I'm sure they didn't intend! If was going to live deliciously and return to full Kingpin size, I'd at least eat something delicious!)