9 months since the last major release definitely feels like a short time in which to declare time-of-death on an open source project

It is also lagging behind in terms of Python releases. They are currently on 3.11, which was released 3.5 years ago for mainline Python.

It’s been a lot longer than that. There was a reasonable sized effort to provide binaries via conda-forge but the users never came. That said, the PyPy devs were always a pleasure to work with.