Well, I have 13, just as an example. I think tying one user per account into the rest of these things is pretty poor - maybe find a way to whitelist one account per user instead if that's something you really want. Although I don't really see any value in excluding the posting/curation accounts just because I have them separated out instead of posting 30x/week on my main.
A lot of the most-community-minded people here have multiple accounts. Curie isn't a person, nor is OCD, nor is SNDBOX, and so on. Putting them on a master exclusion list is pretty much the height of insanity.
I have a couple of accounts as well. They serve different purposes. One was set up for my online store for example.
I see no problem with having a few accounts, as long as rhey’re not used for questionable behaviour.
So do I, I have a brand account for my online business and I had set up an account for zappl but dont use it.