blitz banrate is high in high elos too. some people don't really know how to dodge. trust me. even if you do. you aren't gonna dodge all of them. if you pick jinx or ashe into blitz. your most likely going to lose hard in lane unless they are bad. I play ezreal and not deal with that shit against blitz. however I've played with ezreal's before that can't even E out of his hook or even get hooked at level 1 and blow a flash and heal at level 1. often i type in champ select "ban blitz if u dont know how to play against him". sometimes they are like "blitz isnt woth a ban" ad and support. and they end up going 0/9 or something crazy like that before the 8 minute mark.
however i started to hate thresh more because you can't dash out of his hook. the hitbox is awful. and hes a nightmare to melee champs. sure his hook isn't as punishing if you play safe. but its more problematic if he lands it on the right time you can even flash away