Yes, it will be an issue on any platform.

But how that platform deals with/fights it is what makes the platform good or bad.

Take Facebook for example in horrible… Facebook is rife with the stuff, and it regularly gets reported… and nothing happens. To the point that a Reporter once confronted them about it during an interview, and Facebook proved it did have the capability to contact law enforcement… by calling them on the reporter who showed them the evidence of it on their platform.