It doesn't look like it. Holo, the project that shinobu is forked from, sometimes has a hard time with certain shows. It works by parsing the sites of all the different streaming providers and a public torrent tracker to look for new episodes that are released. So, if a site changes its layout a little bit or if torrents are named in a way that it isn't expecting, it just won't pick up those episodes at all. I think if you were to redesign holo from the ground up today, you would probably use the AniList api instead of parsing all these things, but holo predates the api iirc.

Edit to add here that I think the reddit mods that use holo for the subreddit must do a lot of manual interventions or have codebase changes that are not pushed to the github. I have run a personal instance of holo for a while connected to a testing lemmy instance I spun up and its behavior exactly matches shinobu. So, the fact that holo does post threads for shows like JJK to the subreddit means that it has either been done/scheduled manually or they are running a modified version.