No, if you have a million bucks to throw at an “investment” you can become a permanent resident immediately.

Yes, just like the others on this list[1]. I think they are by far a net positive to the countries which have these visa/citizenship options. They immediately add to the local economies. They also tend to integrate well, given they are typically well educated.

[1]https://corpocrat.com/2015/10/20/25-immigrant-investor-citiz...

In general, politicians don't hurt themselves or their friends. Trump won't be the first or last politician to operate like that.