What I have heard:

-Tommi Mäkinen was in favor of "R5 based WRC" even that Toyota doesn´t have it, biggest reason was/is safety. They still haven´t found way to make hybrid system safe. Remember that even TGR haven´t tested Hybrid car yet. Ask your self: WHY not ?

-Hyundai hasn´t started building their "Hybrid Rally1 22´) Ask your self: WHY not ?

This is all I know. Can´t answer to any questions about it.

I hope we have new machinery for 2022 but I don´t believe in it.