They're more likely to give you dengue than malaria, but one thing Thailand has definitely not eradicated is the likelihood of getting bitten by mosquitos with great regularity...

Yes and you still get bit in the US but malaria is a thing of the past.

The point is not to get rid of all mosquitos, just the disease-carrying ones.

Aren't all mosquitos that bite humans potentially the disease-carrying ones? In the US we've just been fairly lucky but it's not as if mosquitos carrying West Nile/Zika/Chikungunya/Eastern Equine Encephalitis aren't infecting Americans