Seems counter productive to the President's intent. If platforms can be held liable for user posts, that will give them a strong incentive to remove anything at all that might even come close to giving them legal liability. So sure, maybe changing the law (or asking the FCC to reinterpret its strictures) would "get back" at the companies President Trump thinks are doing something wrong to him, but the net results would be severe limitations on what he could say on all platforms.