Not at all. Rarely ever get a spam email in Fastmail. Gmail is the worst in my experience. It’s far too aggressive and would regularly capture legit emails when I used it. I lost a few important emails this way. The best email filter I ever had was to use greylisting on a self hosted email machine - this method had almost 100% perfect filtering for me. Unfortunately custom email servers don’t really work in the modern email ecosystem. Fastmail is the best managed system I think at the moment and have been happy with it for years now.