I guess it would be pseudo-anonymous if you put it that way.
My understanding is that users send to coinpayments.net gateway.. then after some delay coinpayments forwards it to the account @streemit.online.
However I don't believe many have the time to sleuth through the chain to put these things together.
Another thing is the content preferred on streemit.online isn't something you're going to want to hide from your grandmother or spouse or anything of the sort. This is going to hopefully be a nice mostly safe for work site. I've got another website that accepts SBD / STEEM where folks can stream the nasty / NSFW stuff that I'll be announcing in the near future. :)