This ain't the '90s anymore; CPUs have been fast for a while now. If your mid-development partial compilation time isn't basically negligible with the CPUs we already have, your build script is probably fucked up or the module you're working on is way too large. You should rarely be working on something with such cross-cutting concerns that you legitimately need to recompile vast swathes of the codebase at once.
If the new chips were actually faster than than current line. i.e. Ryzen 9 5950X has higher frequencies and Ryzen 7 5800XT increases boost only by 0.1GHz over Ryzen 7 5800X while Ryzen 9 5900X has more cores and same boost clock.
I hardly see anybody upgrading due to 0.1GHz, I'm curious though, what is your rationale? Perhaps you have a slower CPU and you would upgrade since the prices came down?