Okay, all you open source evangelist people: your knee-jerk reaction to come at people who are talking about a problem with whatever commercial software they use and suggest Your Favorite Alternatives™ is exactly like saying "why don't you just buy a house?" to someone complaining about their landlord.
It's like talking to someone who is in a crappy apartment as though they have the agency and skills to stake out a plot of land and build their own home.
You have to be at peace with the fact that some people just want to exist and not worry about so many things. And they still have a right to complain about their situation.
Better comparison would've been something like "Annoyed with your landlord? Go build a cabin in the woods!". Like, that's straight-up appealing to some people, but it's also not just something anyone and everyone can do.
Even then that's not that accurate, more like move to a different place.
It's inconvenient and might not have all the same things you wanted/liked from your old place but you can actually change things in the new place if you really want to
It is the same reason why tons of airports still run on Windows XP.
They already have documented every single issue that could even happen and their solution. Having a new OS would mean new problems that won't be solved in less than 5 minutes. Which at an airport could mean lives are at stake.