Ip blocking is a manual operation done by the overworked bautforum admins as and when persistent abuse makes it look like the best solution.
This decision is normally based on whether there are other users in the same range, since you joined fairly recently it's likely there were no active users in the block when the abuse happened, which made ip-blocking a more attractive solution.
Reductionist and proud of it.
Being ignorant is not so much a shame, as being unwilling to learn. Benjamin Franklin
Chase after the truth like all hell and you'll free yourself, even though you never touch its coat tails. Clarence Darrow
A person who won't read has no advantage over one who can't read. Mark Twain