Why are so many bans going to high damage, mobile champs

Because they can chase you down and then proceed burst you down.

Because they're the most tilting to the general audience.

Also mobility is power.

Because they're the most annoying champions in the game

You just said the reason why.

Mobility mean skillshots are a lot easier for them to dodge which means not only does it grant them engage/disengage. It makes them harder to lock down. Also generally those kits are more packed with stuff (Camille, Yasuo, Riven, etc etc) so they're high damage. Harder for you to deal with alone, etc. Which means that laning against them is 0 fun.

Specific Mobile champions I personally like to ban are the ones that are not only mobile, but also can get defensive, like , and . I hate how these mobile champs have shields while moving fast. That already makes them overloaded.

Because they are often both zero fun to play against and remove the agency of their opponent