They are mainly afraid of investing money in a coin because they know that they will lose their money. Invest in the main coins and await the payout.
The recent increase in the number of scammers has been the fearful dream of all of us. Before now while there was no need for much thought, much research when we invest in ICOs, now we are afraid to invest those who are not scammers. Looks like we are getting used to it, these themes reopen only every time new ones come. Also, as you emphasize if anyone is fearful about new projects, look at available ones on the market.
We should set our mindsets that we shouldn't go to new schemes today since its a repeated trick by them and we shouldn't fall in another scam scheme made by them, and we should be vigilant since as you said the numbers of scammers are increasing maybe the percentage rise due to the fact that crypto scene is untraceable space that's why many thief try there luck to became a crypto millionaire by doing bad schemes and we must be smart to think more for our investment.