It's pointless to not give feedback or they'll end up making things even worse.
They do make changes based on feedback but with Monk it's rarely prompt. I think part of the issue with Monk is that for all that they did make those changes they were never made promptly. We requested a Perfect Balance recast reduction in Heavensward when it was obvious 3 Minutes was way too long for all number of fights (A1S, A6S come to mind) and it was implemented deep into Stormblood. For all that it appeared that the 5.05 changes were an immediate response to the poor reception of Monk at launch, there's nothing they did there that we hadn't asked for for literal years. Every problem that's being fixed there is a Stormblood problem that we'd complained about from the get go, RoF's slow, Formshift to refresh stacks like Transpose Refreshed Enochian, RoE to not have a stupid effect, and increasing mantras pitiful range were not new problems or requests with Shadowbringers, they were all things that should have been implemented as the core design if the devs were actually "Taking feedback" as they said they were towards the end of Stormblood.
As for Brotherhood effecting the Monk, it even took months for that to happen and was only really necessary because of buff creep dropping Monks damage in Stormblood. The basic functionality Brotherhood fix (Stopping one Brotherhood from overwriting another) also took nearly a year to implement even though it was identified as a problem pretty much immediately.