Well Skoda R5 has been the path to WRC for Lappi, Rovanpera and partly Solberg.
But yes with Fourmaux MSport kind of "skipped" the WRC2/ERC stage. I am still not sure that's a good idea though.

Risk with MSport is that the Rally2 Fiesta seems to lack on gravel (slippery gravel most), while being good on tarmac (interestingly especially slippery tarmac). Imo also partly the reason MSport "skipped" the gravel part with Fourmaux.

Another thing is that "everyone" in CZ drives Fabia, so might be easier to get sponsors for something else.