ADA compliance is always a struggle in the US, but if you travel around the world, the US is leaps and bounds ahead of many places that don't even have the equivalent of the ADA to fight for.
Does "other people do it worse" mean we do it well?
Because I only put forward the claim that the US does it poorly. Whether others do it worse seems to have no bearing on whether we should strive to improve or not...
If the US is the best at accommodating mobility impairments, that's got to count for something. Maybe it's not handling it well, but if it's the best than anywhere is doing, keep asking for better, but set reasonable expectations.
IMHO, there's a lot more room to improve accommodations for non-mobility impairments however, and there's examples of other countries doing better in some aspects to compare to. On-topic, accessibility of currency is clearly a US weakness, although the upcoming bill designs are supposed to address this, although we'll have to wait and feel if it works as announced.