I don’t understand that. If you don’t want a unstable version you can use the stable st2 you paid for. It’s not going away and I’m sure it will get bug fixes when needed.
I’ve not read anything about an end of life of st2… was there something in the announcement I overread ? I think there are more people still using python 2 and nobody forces anyone on using python 3 … isn’t it the same with st2 and st3 ?