This whole “issue” is proof that people want to be outraged and will remain willfully ignorant in order to do so.
I don’t think it’s really an “issue,” it’s just something mildly annoying that people are poking fun at because of the test today. It’d have had a similar reception if the test had happened while any other President was in office.
Trump’s penchant for Twitter just makes it a little easier to make fun of.