Those are queues that lose their fun in the general populous fast. I make that assumption and state it as fact because I've talked to many of my friends (low elo, average LoL players) and they all say the same thing "I like urf to mess around with friends or to play a few games, but it gets old fast". Same thing to some extent with 1FA.
The issue is that with URF and 1FA it rapidly becomes "okay the big youtubers put out videos on which champions are the most broken in the gamemode, now everyone spam them". URF and 1FA might be better with 10 bans, but I'm not sure.
Riot tried to improve URF with ARURF but I think they realized that they failed and might be testing out new solutions or are just putting it on the backburner for a long time.