It’s more like a torrent client that has thepiratebay built into it. The main point of Tachiyomi is to have easy access to pirated content directly in the app. Tachiyomi without extensions is useless.

Another analogy: An emulator that also displays all ROMs and lets you play them directly. It downloads ROM from various websites, similar to Tachiyomi.

This. It's open source so I highly recommend people take this into their own hands and clone the repo. There's many forks people use anyway such as TachiyomiAz.

Keeping this thing working is trivial. Anyone with basic html and css knowledge can edit plugins.

Don't forget that forks on GH get deleted too so make sure to make a new repo.