For me to find a decent altcoin, it must have several important requirements,
is that the altcoin project is active in social media because social media is a fairly effective communication,
a road map that is already running well, a strong and experienced team, and a few more conditions.
and of course, all must be done with analysis first
A lot of scams are much more active in social media. They easily get victims through active marketing and also being active several social media to converse with their potential.
That's not a guarantee factor to have a social media presence as a good project. Although that one can be just an added factor but don't wholly rely to that thing if you're looking for a legit project.