I don't it would be possible to remove ICO's from this forum at all. Bitcointalk is financially supported by ICO's - now we can see ICO advertisements in forum ad spaces. Why they would need to cut off branch on which they are sitting now.
I would agree if ICO's would have their sub-forum, to separate it from usual coins. Because now on Altcoin announcement board we see almost only ICO's.
They don't have to be removed, and shouldn't be removed. But depending on the type of fundraiser, I do believe that there should be different types of forums as well. As is, it's extremely difficult to conduct any market research.