For Search, it is about finding the least bad option and hope that they will become more independent. Mojeek (fully independent but poor quality) or Qwant (building own index, but dependent on Bing)
Yup! It is noted in the highlighted text in red. I've had several people respond that they didn't know about it, and would be making the switch away :)
There are a lot of privacy-focused alternatives, but not all of them are. Fastmail and Infomatrix are two excellent options that are more focused on convenience
A company is not a person. Choosing not to support a company because it ultimately benefits its home country, which is actively waging war, should be considered a negative. Whether it is enough not to use their services is up to each individual. As you said, it is a FOSS application, so if you aren't using one of their paid plans, how much is it truly benefiting them?
Also, I don't think this is a "insert current enemy of the West" scenario. Ukraine isn't traditionally considered part of the West, and it has support from most countries and people worldwide (not just the West).
Qwant is the closest to being independent and Non-US.... I was recently told about StartPage being bought out by System1 (A US company)