This is your personal opinion. And there is the experience of those people out there. I believe you that you personally stand for these but I seriously doubt your employer cares. There are many examples of the same issue, like that one with Firefox.

https://www.zdnet.com/article/former-mozilla-exec-google-has...

It is kind of funny to me that other email vendors could implement SMTP and co properly and Gmail _more recently_ started to have issues. Just because of this I started to look for alternatives because I will not stand and watch how an ad-tech company destroys the open internet, even if this will be very inconvenient personally.