then out of the blue present an aligned front to push a certain narrative.
This is a good point. I see this alot with ukraine. There are many famous shills (eg. max blumenthal) who have been promoting the fascist invasion of ukraine. Now these same shills are supporting Palestine. This would be good except they are just using the issue to lure people in. Then once they're hooked on all these shady accounts, they start talking about how ukrainians are nazis, how stalin was awesome, etc. It's so transparent but so dangerous. I imagine this happens on many fronts.
edit: Just remembered these podcasts about this: Part 2 and Part 3