They tried it with Tachiyomi.
Reader apps and programs are infinitely harder to recover from the just sending a lawyer to mangadex.
Anyway, they tried taking down Tachiyomi.
They bullied the maintainer successfully and the Tachiyomi team first removed the in-built functionaility for the sources then seized development on the app as a whole.
Due to Tachiyomi being FOSS (thanks again to all the devs) one of the primary maintainers forked and renamed the project :)
And now we are back to square one with Mihon :)