Honestly, I am moderately irritated by the KSP fandom especially when it leaks into things that are not actually related to it. It's similar to why I used to consider myself a brony but now I cannot stand the show or references to it. I'd go to a place to see X and I don't want to see Y, especially when everybody already knows about Y.
There are plenty of things I find irritating are on Reddit, including fans of KSP sometimes. For example, when any relatively famous group or person that's somehow related to spaceflight on Reddit answers questions, there's the inevitable thread or three about the Kerbal Space Program. I get it. Some people with a certain level of interest in space exploration like KSP. Ask them something interesting.
This video of his in particular does not serve well as a tutorial or an advertisement, so I don't consider it good to advertise Orbiter. It's just a "Let's Play" video and has little to redeem itself for people who do not follow Scott Manley's videos or want him to play Orbiter. There are some interesting facts in the video, but much of it is not very helpful when playing Orbiter.