It's nothing remotely like the bad old days. You are correct.
It is however bad new days.
Yes, Chrome is a better browser than IE 6 was, but getting everybody on a team, on every team to test cross browser compability is starting to get hard.
We're now seeing otherwise great developers who more or less openly admit they don't test in other browsers.
I call them out on it. It is unprofessional.
We've fought to get where we was a few years ago, where every modern browser was considered equal.
Don't let any web developer get away with Chrome only!
Just like nowadays more and more pages only get coded for chrome and might or might not work on Firefox.
IE6 outlived it's expected lifetime by leaps and bounds due to lots of customers stuck on machines locked into running old version of windows due to financial or corporate policy reasons.
(Fun spitballing doomsday scenarios: LineageOS gets more traction and needs to harder fork; or, Huawei is forced into a hard fork and takes the entire Chinese market with it, which could snowball other markets across; or, some Android worm causes friction with the major carriers and they get back into the version/upgrade micromanagement game even worse than before.)
Today isn't a dreamland, but it is in no way as bad as the IE6 days.
But in the early 2000s, you only ever targeted IE6 and maybe 5. Opera was that weird European thing, Netscape disappeared by 2003 and Firefox was that silly open source stuff used by people without friends or any sort of social skills. That was the IE days.
Some software houses who supply the company I work for, are refusing to work with anything but Chrome. So it really does seem like the bad old days all over again.