I have read most of the posts regarding sileach, lmax and roast,...

I have read most of the posts regarding sileach, lmax and roast, my view is, sileach and lmax are unproven at a commercial scale and no one in the world uses it, so it was always positive to me that management during pfs explored alternatives.

I'm not saying sileach or lmax will not succeed. As the pfs advanced, it was probably clear that roast was chosen as the most efficient path from a risk and time prospective for development.
Roast may have also been more accepted by possible partners in the future.

The electrification of transport over the next decade will place massive demand on supply, and located in the middle of Europe, with a cost of $3500 p/t, Cinovec will be on all radars.

All in my opinion.