The problem with merging identities is that people don't want them to be merged.
I want a firewall that separates identities. The identity that I use to connect with my mom and in-laws should be separate from the one I use to post on tech forums. The identity where I share baby pics with my wife's friends should be separate from the identity where I comment on deathmetal videos. If Google requires them to be the same - I'd rather delete some of those identities and stay anonymous/logged-out, not merge them.
I want a firewall that separates identities. The identity that I use to connect with my mom and in-laws should be separate from the one I use to post on tech forums. The identity where I share baby pics with my wife's friends should be separate from the identity where I comment on deathmetal videos. If Google requires them to be the same - I'd rather delete some of those identities and stay anonymous/logged-out, not merge them.