This has been an issue for so long, why don't they just let you attach a custom domain to a normal account? Paywall it behind the Google One subscription if you must, it would still be an improvement over having to deal with the needlessly bloated admin interface (for single-user purposes) and randomly being locked out of features that haven't been cleared as "business ready" yet.
I believe so, I haven’t had any issues at all. I use my email for my business and personal and in all the dealings I’ve done with different providers, none have ever marked me spam. I also have a very spam-looking domain so I might have a better than average say on it.
