It is something that bugs me till today. Are they mostly newbies trying to find a path to enter cryptouniverse or experienced people who are just gambling to score a moonshot on luck?

This is the "meme" rank on coinmarketcap, there's millions on deflationary tokens with no effort from the "devs" at all. Just copy/paste a code, copy/paste a whitepaper, eventually pay few bucks for a domain and that's it.
Why people fall for that, yet?
Greed plain and simple. Once these rediculous pump and dumps stop then these coins will all be worthless. They buy in hopes that someone will buy higher. Based on the doge run last year. Happened in 2017 with a zillion masternode coins. Now...they are all worthless and left for dead. A new fad will pop up and meme coins will be forgotten about.