Fomo is not a trap, its presence can't be ignored when you are into crypto, it helps and sometimes it doesn't, this is where investors have to make a choice
It all depends on where you fomo in of course, but if we focus on the mass, they generally do fomo into the market when it has peaked out, so in that sense it can be seen as a trap, but one they fell into themselves.
I have always distanced myself from fomo buying, which is why I start accumulating when the price has gone down at least 50% from its high. I'll happily buy the price down once or twice a month to prepare for the next leg up.
Dollar cost averaging is the easiest way to position yourself into the market with little to no understanding of technical analysis. It's not as exciting as opening a large position in one go, but definitely less risky.