Title is a bit misleading.
TLDW, Star Wars has stolen lots and lots of artwork from fans for their comics and has been doing it for a long time to the point it's so pervasive that entire fleets of ships and almost every vessel in whole comic series are copied from fan art. No credit or recognition officially or unofficially has been offered or any communication in that regard either.
This is his fourth video on the issue and the only one that really provides a synopsis for how widespread this all is.
Here's the first video, eight months ago.
The second five months ago.
And the third... a few days ago.