@girish We contributed some code back to Plausible Analytics some time ago to accomplish some things we wanted on our time line rather than theirs. They publish infrequent "official" updates to the self-hosted Docker code in part to minimize the support impact on their small development team. I believe they publish their code (not self-hosted) updates more frequently, which might give visibility to security updates and new features. Their primary source of revenue is from paid accounts that they host on their own infrastructure, so perhaps another reason is to entice customers to use their hosted Plausible solution.
FWIW, we do both, in part to support their efforts. They are solid and I have nothing but good things to say about them as a company, a platform, and as individuals.