yeah you could, but again like I said, I forgot to decimate all of these, cuz the way decimation works now on the unity plugin i'm using is that I have to wait 2 mins for every decimation for each separate mesh, which frankly i don't have the patience for, and I don't decimate in blender only in unity. Best bet is to just upload it to above 20k it'll only take you a sec to edit the file I mentioned in the description above. And @xfacter, yeah I legit forgot to decimate all of these :/
sorry... forgot to check the polycount, here's how you can upload a higher polycount avatar: "~> If you want to upload it to above 20K polys, you can do so by manually editing the "VRC_SdkControlPanel.cs" file using Notepad + + (what I'm using) in this directory: Documents>New Unity Project (or whatever project name you're using)>Assets>VRCSDK>Dependencies>VRChat>Editor. What you want to do is find the lines that says: "(polycount < 20000)" and change it to something bigger."
if you're using an unmodified VRCSDK on your unity, make sure to only upload the scene named "twilight sparkle mmd below 20k" instead of the "twilight sparkle mmd above 20k" one