Yeah, that might be a good thing to actually. To make their content only visible for their own followers if they get reported for this spamming-behaviour. - I like it. As long as something is done instead of ignoring this whole issue I'm totally fine with it.
I mean, today, it's fine. We can handle it. - How about 6 months from now or a year? - It will be crazy if you don't work to prevent it.