>>393372863
2019 was the last good builtin renderer version of unity. 2020 is just straight cancer and an abortion of a build.
2021 isnt as bad and it's only good for the urp renderer being mature enough to be worth it.
Only reason for vrchat to migrate to 2021 would be urp and that would break every currently used shader and break all content avatar and world included that has currently been released.