I think unity is just a bit crippled due to the company constantly ripping out and shoving in things because they're desperate to show investors they're worth the effort
I think basically every feature in unity atm is like.... the functional stuff is (DEPRECATED) meanwhile the replacement lacks like 50% of the featureset of the old version
most of the libraries ive seen that use assembly scanning either dont support not doing it or make it way harder and i hate it. might be just the stuff ive been looking at though