The only ones I really dislike are shitcoins like XRP which claim to be something special but are actually not better than our current money system...
The funniest thing about XRP is that it is supported by an army of fools sitting at home all day hoping that their $500 worth of XRP will be worth tens of thousands of dollars.
Seriously, I have never seen such a delusional community within the crypto space. The very fact that they threatened a researcher stating that XRP's market cap is inflated artificially by supply that can't be spent, is a clear sign that we are dealing with imbeciles.
I get it that people invest in XRP to gain profits, that's perfectly fine, just don't pretend it's decentralized or that it has any connection to crypto in general. It's a fucking database.