I feel if the comment was made from the footage it’s fair to question (the comment that is, not the low end). As others have said, camera/phone microphones don’t really have the ability to represent the low end. If he’d have said it to you after soundcheck or even directly after the gig, that would make more sense to me.
That said that rig should be more than capable of producing enough low end for that context. I’d consider bringing the HPF back and a bit and therefore maybe not boosting the bass as much either. I also agree with the comments that it’s good to have these constructive conversations as a band! But it has to be the right context. Do you guys use a rehearsal space where this could be explored together?
The rig definitely has much more on tap, I have it pulled back quite a bit with the HPF. We do have a practice space that I leave my backup rig in, so I'm not lugging the whole setup as much but It might be worth bringing the whole setup to figure this out. The main reason I haven't don this is because the room is pretty boomy on its own, so I usually have to EQ quite differently in there.