The general consensus is "no" there is no guarantee of anything at this point. There was a 3DGS wiki available up until about a year or two ago, that's gone.

With that said, I love this engine and plan to continue using it as long as I can. I have released 3 games with it, and an working on number 4. I am all for using the limitations as strengths. “The enemy of art is the absence of limitations.” - Orson Welles. I am right on the same page as far as having a local game engine without needing online connectivity for it to work.

I think the folks are just trying to make sure people know that the support is gone, and the community is dwindling.