I learnt this when I uploaded a project that claimed to do something but was only like 10% finished and you couldn’t run it.
It got cross-posted across the internet and a ton of stars and even referenced in some else’s project repo as a competitor/alternative and reasons why theirs was better!
This experience really made me smile. Nobody even tried to run it.
FWIW, stars on Github aren't means of expressing that you've tested and liked something; they're means of bookmarking interesting repos. So it's entirely plausible you got hundreds of stars and nobody ever run the project. Myself, I've stared close to 300 repos, and have run maybe a handful.