Except for the banned map the list seems useless most of the time in my experience, in 20 games, i got Golan Heights Air spawn(that’s in my disliked maps and SHOULD BE MERGED WITH NORMAL GOLAN HEIGHTS, that is my banned map) 4 times, and didn’t get a single match in my liked maps.
I prefer to wait 5~10 minutes in a queue knowing i will play a map i like, than being forced to play a map i don’t, the preference should have way more weight in the match maker.