Classy statement from Simbin. They seem like a genuinely good studio with the right mindset.
From a market perspective, I think licensing a WEC title would be the best way forward. Going GT3 will make it a real challenge to garner interest from the ACC community. ACC is a mature and polished GT3 sim, having been around for a few years now. Kunos had the opportunity to fine tune and build on it.
Simbin would virtually be starting from scratch in comparison to Kunos. Doesn't mean they will fail physics wise to ACC but that its more likely it won't be as good due the aforementioned maturity and polish of ACC.
But there is opportunity and potential in a WEC style sim in my opinion. Regardless, I hope they can move forward because they've always been a great studio and enjoyed all their sims from the original GTR, GT Legends, all the way to Race 07/GTR Evo
Of course, there's a couple issues. First, and biggest, Motorsport Games (rf2) owns that license.
Then, there's the smaller issues, like the fact that for a proper WEC game, you need hybrid, which is only currently present in the iRacing and AC engine.