Tantacrul has been making videos about music far before he joined Muse. He is into UX and music. What is he supposed to do? Avoid getting a fitting job? Stop making related videos if he does?

I watched the video when it was released. I guess he mentions MuseScore but I don't remember this. I think I would have remembered an unwarranted mention though. His insight into MuseScore is likely to please his subscribers.

And of course the video thumbnail and the title are clickbait. Most mildly successful channel do this because it's pretty much a condition for success on YouTube. I guess blame YouTube or possibly human nature for this. I didn't find the content deceitful.

I liked the video, it was quite interesting and entertaining.