I’ve played and run the game for a lot of monk, rogues, rangers, paladins, and fighters. The Monk burn their limited resource noticeably, frustratingly, faster than the others in actual at the table play.
I don’t us stunning strike that much, but it absolutely isn’t just “theorycrafters” who see it as powerful. An entire round of an enemy not being able to do anything while having advantage on attacks against you is very powerful.
The difference between Monks and two of the classes you mention here is that the Monk regains their points on a short rest.
Let's take the Paladin and Ranger. At Level 2, Paladin has two spell slots. They can use those two spell slots for Divine Smite, which is 2d8 per shot—compared to 1d6+DEX for the Monk's Flurry of Blows. Except they get two uses of that
per day, while the Monk regains their uses on short rests, so they might get another two or four uses. (And they still have their Bonus Unarmed Strike on every turn they don't use FoB on.)
Meanwhile, the Fighter also regains resources on a short rest, while the Rogue doesn't have any sort of rest-restored resources (and given Cunning Strike and its reception, people
want the Rogue to have zero limitation on potent abilities).
I'm always baffled when I've seen folks insist it's impossible to fit short rests into gameplay, when no group I've played with has ever had a problem with it, nor has it been a thing where players just request for one and then immediately get it whenever needed.
Pretty sure the designers asked us for feedback and people with platforms get to use it to mobilize their bases toward changes they want. That's not hostility, that's literally what WotC requested.
So, say you're a YouTuber with a dedicated following, and even people beyond that following are aware that many take their word as gospel when it comes to the game. Imagine they express outrage towards a revision of a class not being what they want it to be, to the point that they openly call for their followers and viewers of their video to give responses to the survey video echoing the ones expressed by said YouTuber—even to the point of encouraging people to straight-up
copy and paste their words, without giving any thought or opinion of their own.
Do you not believe that kind of nonsense would taint the results of the survey?
And do you believe that the average player of the game, the sort of person who enjoys the game with friends and doesn't spend time mulling over what the most broken/powerful setups might be, would be someone who invests their time in watching such videos? Or would it only be a small demographic of the total playerbase?