yes thats right you should only put your investment on active projects especially if the project really showing real progress to the project and have dedicated team.
Of course, because if we invest in projects that are always active in various social media, then we will not be anxious about the project. So you can invest as much as you want, because I think the active project will be safe.
Not all the time, thus, I don't think anything is safe in crypto.
Being active in social media is one of their marketing strategy, but we never know if they are still active after they get our investment.
There are circumstances in the long run also that might put our investment into a big risk, we should be ready for that.