I think a lot of this nonsense could be avoided by putting a single link to the series in the official publisher site, just at the top of each title as a reminder people have a legal way to read it if they want.
If publishers want to let people know when they released the last chapter, then they should be doing what Jump does. This situation is just making people hating official publishers (even more) for something they didn't do and turning away. If this is a mangadex initiative to have publishers on their good side, this should have been managed silently, why punish the readers.