How many accounts can be opened for 1 user?

My main question is: After how many accounts are created, will moderators start deleting them because of their large number?
5? 10 or 20? If you know, please write here! Thanks in advance

As far as I know, only titled players are allowed a second account, for privacy. Other than this everyone should be encouraged to use the same one to prevent smurfing / rating system abuse. Blindfold accounts I think are okay.

Two seems to be ok. I play often anonymously with 0 followers.