Nope, I'm pretty sure it is daily since we just got another update today.
So what you are saying is that the maintainer for this docker is using a script to fetch the original repo and updating here automatically? If this is true (which seems likely), I have two concerns:
Too much unnecessary writes/updates on cache (or whatever volume the appdata is installed). As @Linxawakening mentioned, the last commit was pushed on August 2022. Thus, all these daily updates were nothing but making more disk wears. Yeah, I could opt not to update the app for that case. But then I would miss if there was any actual update that includes important changes. And this kills the purpose of updating the app.
Is it safe to assume that everything will work 100% on unraid without any human involvement? I am not an expert on how to maintain dockers or anything but shouldn't we concern about OS/library compatibilities? Also what if there was any harmful or broken codes pushed in the original repo? Does the maintainer for this docker fully trust any changes that are made to the original repo?