[2019] Can we please get an official explanation on why this game STILL has no tutorial

First of all, we also had an in-game tutorial mission, but it wasn't working as desired, so now you think as T1 (and to some degree T2-T4) as tutorial ships. And it works better than a tutorial mission.
Also, we have a special section on the portal dedicated to new players.

We know that some of that stuff is outdated, and we're working to improve stuff to be up-to-date.
Third, you can press "F1", as in most programs, and get in-game help.
And fourth, we're also working on improving new players' experience with more in-game explanations. Some of that you can already see in account leveling mechanic.

Actually there's a playlist: https://www.youtube.com/playlist?list=PLVmXzlhZvJVSo3LA0O0ccjHRxxv-Qzchb

As of now this serves as a pretty good even if non-interactive tutorial:

Gets displayed during installation in WGC version, meaning player is less likely to skip it than in-game tutorial that stands between him and real playing.