If I get a nickel every time an advertising company in possession of a mainstream web browser gains a reputation for an accumulated history of product graveyards, I’d have two nickels, which isn’t a lot but it’s weird that it happened twice.
We might be able to get you up to a whole dollar, just listing off the various chat/messaging apps Google has killed off over the years. I take it as an opportunity to move to FOSS/self-hosted substitutes when that happens.
I do all my dev in Firefox and rarely test in Chrome. I've been made aware of maybe a handful of issues over many many years doing it this way. If it works in Firefox, 99.9% of the time, it's also working in Chrome.