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.
For many years member now here are now adept to those scams not only the ICO's but also other ponzis in the physical world because it has almost the the same schemes. Some users may have different perspectives on this ICO's but nothing it could be done to change those. There are many payments for these schemes but it is just the same what ever it is. Schemers could just find new ways and smarter to hide those facts in plane sight.