the real conversation we should be having is how to move to a system where GC is obsolete, where women and marginalised genders can have no issue in playing in regular tier 3 / tier 2
thats all I have to say on the topic
this is pretty much speculation but:
I think Riot have a limited budget to spend on non tier 1 val (despite tencent being rich af), so I think the money in GC is syphoning riot investment in tier 2.
I think it's the case for orgs too, idk how it's going to play out but I can see there being more teams which decide to have a GC team over an academy team. Also I don't see tier 2 in its current state surviving 5 years, too many orgs are leaving, a complete overhaul is needed imo and whenever that (hopefully) happens, it'd also be a great way to intertwine the new system with GC