But i am shocked after the little bull run that pushed up bitcoin, etherum anf other token prices, people are starting to offer signal services, ttadr signals etc
No werent on bull run phase yet. This is simply a boost from all over investors and traders who are looking forward for a healthy market. Bull run is something very huge and lots of money will be involved due to demand of different coins and tokens.
Signal? You mean a group where people given certain clue or hint to buy or sell? That's not actually new and even for altcoins there are lots of groups like these. Anyway your advice is good but you cant force other to rely on charts and normal basis due to lack of knowledge.
Or people should probably just use signals from traders who are consistently right. Many of those groups are not worth risking ones hard-earned money. They could even be buying up coins that don't deserve investments and dumping on their customers.
I guess it's better to just use free sites like TradeView.