Only comatose don't complain about being taken care of by machines
If it's too dangerous for 'mecha' to get in, it's too dangerous for humans to come out
the only problems medics face is getting 500lbs people out of their homes, and for that we have cranes and forklifts
Cyborgs, not Mecha, the problem here is control, not mechanisation
and even then they aren't as effective as humans with some tools on 'em
You're taking the 'urban jungle' a little too literally