Altcoin investment is somewhat risky. So you should never rely on other's suggestion. In this case, you must do your own research. The view of others and your view will never be the same. So research the coin you want to invest in beforehand. Suggestions from others will help you reach a decision.
Investing on new projects without checking the background of the project was the risky one.Some projects will give you good profit at the initial stage and the trader who are ready spend some time for the investigation of the project background may not loss their capital.Some fake project also their in the market,the trader should not use their money at the fake project.The own research for the project is more important one,because we can’t trust the signals of unknown resource for investment.
I agree, these "signal" people are just faking it at this point, during the 2021 bull run I have seen so many people who charge money for it, the token devs pay these signal guys some money, and the signal guy promotes that token, so in reality there is no signal, it is just promotion but they make it look like it is some expert who is giving an expert opinion about something, which is not the case at all.
I believe that it is going to be quite bad if we do not care about what is going on, and I think we should just realize that everyone out there could scam you as much as they can, some scam people in millions, some in thousands but everyone is trying their best. So do not trust anyone, that's why bitcoin was created in a trustless way.