They might want to level gate higher difficulty missions. You can pull your own weight not playing meta, I personally don’t play meta and do fine even on 8 and 9 difficulty. It is frustrating when a low level player uses inappropriate orbital/eagle strikes on targets which wastes time or does not know the general size of a strike causing friendly fire. I don’t mind that on lower levels, people got to learn somehow but it sucks when a level 13 eats up all your reinforcement budget then causes an extraction failure because they decided to throw out a danger close 120mm barrage causing the loss of that missions super samples.
Dude is also situationally gender neutral. Saying “Hey dude” to a trans woman is misgendering her but exclaiming “Yo dude check this out!” or “Duuuude no way” is perfectly acceptable.