I find it frustrating that people just assume that those people complaining "can't adapt to change" or are just reacting because "ohh it's different and people never like that". Sometimes these changes are much bigger than just superficial things, and they are very much making the site unusable.
Other posters also seem to have exactly the same attitude as MNHQ, in that if it works for them, then it must be like that on everyone else's system, and that other people are just a bit stupid and haven't played around with their settings properly or whatever. The reason software testing is such a huge field in professional environments is because there are so many different ways that software and devices interact, and so many different ways that users approach a site, some that you might never have expected. When you are developing software or apps, you spend ages, and a fortune, trying every single possible combination - this clearly wasn't done in this case, or we wouldn't have so many major broken elements from so many users. The odd glitch, yes. The occasional user with a different system or who does something more unusual, yes. Hundreds of posters with the same problems - no.
If loads of people are complaining about not staying logged in, odds are that some of them are going to have ticked the box to 'stay logged in', and that it hasn't worked, enough to make them complain about it. If someone is lucky enough that it has worked for them, great. But loads of people reporting the same issue usually suggests that there is something more wrong, and that it isn't working on some of the systems. Suggesting a fix that worked for one person, fine. But simply not understanding how someone can be experiencing something different or having different issues is exactly the sort of mindset that leads to releasing software with no idea how it's going to perform on other systems. It's like people who always use Zoom on a laptop trying to explain to other people on the call where to find things and getting frustrated when they can't do it and assuming that they're thick, when really they have no idea that the same buttons and features aren't always available on different systems/versions/devices, and if they are, they aren't located in the same place. It's a weird sort of lack of imagintion or experience in computers I guess.