After the initial shock, I'm now "relatively" at peace with this model, except that it still looks like a beta and remains for me too incomplete for a sequel. So I pay to use mainly C2 and I lost one year using my coupon. Fantastic.
And this web application aspect (desktop version included), I will never completely get there. Maybe one day they'll eventually put in place a one time fee lifetime licence. In any case and for my needs, I've no desire to return to the side of Game Maker, Unity or other.
Not really the choice for the moment and I continue to pray for better days.