The fact that all these house rules are not the same for everyone simply proves my point. How many house rules did you have in 1ed and how many were answering the same problems as the table next to you? In my case, the shared house rules were 5 pages long, and these were at about 12 or so different tables. All these rules were "needed" to have a consistent gaming experience across all tables as many players were going from one table to the others. Some rules (initiative and surprises in cases of duergar and rangers...) were even given pre-tournament simply because there were so many ways to "correct" the problem...
Most house rules in 5ed are for "preferences" and not for "conveniences and necessities" as was the case for 1ed. But don't you dare say anything against 1ed.
Worth noting that many groups didn't even understand all the rules of AD&D and so their house rules weren't always so much rulings as misunderstandings!
I was always that nerd who read the rulebooks cover to cover and was constantly being like "oh hey, there's a rule for that!". I thought I was being helpful, but I had more than one DM pull me aside over the years and say "we don't play it that way".
Worse was when people would argue with me and say "no such rule exists and I would know because I've been playing for X years". Then I'd show them the text and they'd throw a fit.
Like the time I was playing with a 2e group who thought you got multiple attacks with both weapons if you dual wielded...as if two weapon fighting wasn't already busted in 2e!
I showed them the rule, they looked at it, and continued to play with their hasted double scimitar of speed characters with 6 attacks per round while hasted (they were all Elves* of course, so who misses a few years of life when you can live for centuries?).
*a certain subrace that foolishly was granted the ability to have 19 Strength and Dexterity by a certain Book of Elves, no less...