Well that would be the logical thing to do.
Kick of the heavier passengers and they don’t have to remove as many total people. Which is overall better as you’re creating travel problems for fewer people.
Although unless you’re like 20st then it’s unlikely that it would matter a great deal whether you pick the weightier people since they’ll be making the calculation based on a formula that attributes a set value to passenger weight.
Sure, I was being hyperbolic in my language.