it's worse than that : airplane pilots are certified for a particular set of aircraft (and that's why the 737 max came to existence). Even if a company wanted to boycott Boeing, on top of refresh its current fleet it would have to re-train and re-certified all its employees.
Weirdly enough, most of Air France & KLM fleet are comprised of Boeing planes
> Most of Air France & KLM fleet are comprised of Boeing planes
Are you sure about that? On WP I see 79 Boeing out of 223 planes for Airbus, but I’m not expert. Is there any wider fleet to consider? https://en.wikipedia.org/wiki/Air_France
Weirdly enough, most of Air France & KLM fleet are comprised of Boeing planes