Only a small number of species (single digit percentage) go after mammals. And even less than have been found to be vectors for disease.
The basic point is that yes, we can wipe out selected mosquito species via eradication programs (like sterile mate release) with zero consequence outside of healthier people, because human hazardous mosquitos aren’t unique to the ecological niche they fill.
I realize this is a dumb starting point, but ... Cows don't eat mosquitos, Feed corn is not pollinated by mosquitos, Orange groves do not require mosquitos. What, specifically, are we afraid of?
But "collapse" is not what I'm saying. If you were to remove mosquitos in a localized region and observe the effects on the region's ecology, you could witness the problems, reintroduce the bugs, and revitalize the region (probably it'd recover anyway).
Mosquitos are fairly localized. Their range upperbound is 7 miles. Some just fly 300 feet and breed around your house. There are plenty of ecological phenomena that are managed in "a few miles" ranges, like fish populations, forests, etc.
I haven't heard a compelling reason in any of these threads to believe that it's actually dangerous to remove them from a few sq mile area.
There's no reason to be absolutist about problems we can manage, just based on unobserved worst case solutions with no risk profile attached.