I’ve gotten pretty bad food poisoning twice so far in Taiwan (been here ~4 years now). First was (as far as I can tell) from the Taipei Main Station McDonalds (though it’s totally possible I touched something before eating as it was hand food and I hadn’t washed my them) and the second was from a “Philly Cheesesteak” at the Kaohsiung Reifong night market.
I do have a pretty weak stomach overall though and “upset” it quite frequently (though I think that has more to do with my spicy and coffee diet than anything else).
Overall I agree that restaurants here are a little more lax on their cleanliness (doing dishes with plain cold water in the gutter anyone?) but overall the streets / public transportation are fairly clean.
I’d also say that clinics/hospitals here aren’t quite as “hospital clean” as I remember back home in the States, but for the price and quality of care I’m not complaining.