Clearly whoever decided on that has no idea of common software development practices. If its together with a release just add that to the patch notes, but that not an excuse to not deliver patch notes with a patch.
Yes you're correct about that part, what is frustrating is not knowing what the patch was for. We are simply asking that patch notes are also release on the same day, otherwise we are left wondering what was fixed.
That is wrong decision. Maybe if DTG want to avoid clash with major release topic at DovetailLive they could run a closed(for replies) thread here at official forum. This way they could post every change (small/big) in very simple text only way, like this: 21. February 2019 16:42(UTC) build #XXX (XXX - actual build number, don't remember what is it now) Train Sim World: Main-Spessart Bahn DLC compatibility update The lighting issue in a section of the Standedge tunnel has been fixed etc...