You read that wrong – or maybe I worded it badly.
Guest aff managers ARE allowed a very limited number of PMs – I think 10 or so – in order to address issues that affiliates may have with their program.
This is NOT supposed to be used for any type of solicitation. It is meant for the benefit of affiliates, so even programs that are not currently members for one reason or another can be adressed.
Using these privileges for spamming is NOT acceptable.
Member programs CAN send out offers via PM. It’s up to the affiliate to consider them or not.
I get offers on a regular basis, and either keep them for later possibilities or delete them, and occasionally take one up on the spot.
This I do not consider spam, I do want to stay informed on who offers what.