Lift really lost traction over the past year. I think he is put off that his project and involvement in the community is being disregarded for other alternatives, seeing his star falling I think he jumped to his next thing ( Haskell and Obj-C apparently )

In programming you don't have to be monogamous, you can select another tool for a certain job without implicitly saying that all the stuff you used before was worthless crap.

It does not mean anything, it means at most that he doesn't think it is a silver bullet.