Especially those tokens that are not really useful here in the market, and are still listed on the exchange to victimize newcomers and even pump and dump participants in the TG group.
I wouldn't say that it's necessarily getting worse, but it's definitely still a problem that is present.
I remember back in the day there were a lot more of these active TG groups pumping and dumping coins on a daily basis. I actually see a lot less of these happenings these days. Perhaps I'm out of the loop, but it's difficult to manipulate the market in a bear market since there isn't a lot of movement to play around with for the manipulators.
Pump and dump groups are only one way of manipulation though. There could be institutional manipulation as well, although I doubt that's going to be a huge problem given that BTC is decentralized and there isn't a whole lot of institutional players in the scene yet.