Yes, everyone is free to avoid using Google/Facebook/Popular Service X/. Now, which group are you advising to avoid using Google accounts? Members of marginalized groups are often those who must keep their identities private.
Your recommendation further marginalizes them.
Google and Facebook are infrastructure. We seem to be moving towards some version of "You can't be gay on google without telling THE WHOLE WORLD you're gay". Then your options are:
1. Tell the whole world you're gay
2. Don't be gay on google, pretend you're straight
3. Don't use Google services
The way to not marginalize minority groups is to leave in the fourth option: 4. Be gay on google, but without being forced to reveal it to the whole world.
Some people, for example, want to post on youtube in ways that reveal their sexual preferences without linking it to their real name. For instance, maybe they are commenting on videos related to gay rights, but their parents are homophobes and they haven't revealed their sexuality to them.A person in that situation has to choose one of options 1-3 above. Whereas I, as a white, straight, male, can post publicly about most things without fear of anyone knowing. That's how this policy effectively marginalizes already certain already marginal groups.
Edit: To make things perfectly clear, I'm suggesting that access to Google services is about as important in our society as, say, banks.
There are reasons for wanting a mask that are legal, ethical and mandatory. My life is of more than middlin' importance to me.
I totally fail to understand the crass blindness of those who limit their reasoning to their own bland case.