@tek Not really, since:
1) Crutches are a previously recognized medical device and
2) People who do not require crutches rarely use them and
3) Crutches do not, by themselves, reduce visibility

You can argue that this is aimed at changing 1, but you’d be hard pressed to argue that most people who use ad blockers have a diagnosed AD(H)D disability. Their ubiquity would point away from that.