Just downloaded Firefox again for the first time in ages...what's lame is that some G Suite / Apps / Mail features are only available in Chrome forcing me to use Chrome for work..
What Google app features are not available in Firefox? I use Firefox and my work uses Google's products and I never run into any issues with gmail, calendar, docs...
You can use Firefox privately though. And for work, if you want to get out of the vendor lock in, you can use a browser just for Google stuff. I do that at work as well because Chromium works better with my GPU for video calling, so I run Wire in kiosk mode. Everything else I do in a nicely configured and customized Firefox.