Side question: What is long and convoluted about Google's account management? It's one account with a single login which works across all Google products. Seems pretty straightforward to me. It only gets a bit more complicated if you try to disable parts of your account, but that's not the normal use case.
I have my own domain email on google, plus a personal @gmail, and have my work email hosted...
It can get laborious.
Instead of understanding that I'm the same person with access to all of the accounts, it makes me log into each one separately. For most products you can be logged into each one simultaneously, but the first one you log into is the "default". Analytics, for example, doesn't even support multi-login, so if that "default" account is not the one you want, you have to log out of ALL of them. WAT