The lisp community is a lot more like the Unix community than the JavaScript community. We have a lot of good tools, that work well, and don't need constant poking. Do you worry about the viability or usefulnes of "cd" or "cat" or most of the other core unix tools even though they probably haven't been touched for many many years?

Don't worry if a lisp project hasn't been touched for years. Worry if a project has a boatload of open/known bugs AND hasn't been touched for years.