and the main way that'll get fixed is if GF grows balls and gives us more removal in DLC2
you say "main", I think you mean "only". From your perspective, anyway.
If the problem for hazards is removal distribution, then that's all the more a reason to ban Gholdengo. Because we have
no power whatsoever over what mons get what moves. We cannot decide who gets Defog/Spin, we cannot control what mons Dexit and which don't. As far as the process of tiering as it is today care, there's only one thing we can control: Bans.
At best, the argument that we need better removal distribution means waiting for DLC2 in hopes that the wish is granted by GF, which is irrelevant for the meta today. At worst, it's the admission that we have a hazard problem, but we can't nor should do anything about it because "Gholdengo is not the problem", which seems like a very weak argument for total immobility.
If DLC2 gives more defoggers, then unban Gholdengo then and retest it. The council stated that all current and recent bans and suspects are looking at the meta today
and today alone.
Unless you have an alternative proposition to solve or at least improve this situation that doesn't involve waiting for DLC2, that is.
Also, and while I don't find this to be particularly relevant and thus don't want to delve too much, ID+Foul Play Mandibuzz is just the set that "fits" the current meta. It's her best set right now, sure, but not the only reason why she's viable and assuming that she'd still struggle to stay relevant in a meta where she can at least defog without becoming a free switch + set-up fodder for Dengho is bold, to say the least.
In any case, I'd like to remind everyone that Gholdengo isn't broken because of its influence on hazards nor because of it's prowess against bulky teams, but for the fact that he
does both at the same time. Let's not forget that Factor A and Factor B are always together and cannot be separated: Gholdengo is not a mon that "only" warps the hazard meta, not will it ever be "only" a glue-mon with myriad of great options.