Earlier quoted context omitted.
Perhaps, but it's hard to say. False positives are much more harmful than false negatives. I have peronally had Gmail flag a number of legit emails as spam, and those are just the ones I know about! It's almost certain that I have lost valuable messages because I didn't check the spam folder in time. These aren't transactional emails either, I'm talking about messages from real people that I know personally. I would…
I'd take the false positives, personally. If someone really needs to reach me and doesn't get to me on the first try, they usually just email or text back and go "Hey, did you get my email?". Or, just quickly skim through the spam folder once a week.
I now skim my spam filter regularly because of this, but not everyone realizes they should do this.