As a new Player, who finally started playing the game a little over a week ago, I think my take on this is important.
Using streaming views for this game is stupid. I've done mostly trading, and it's not going to do well for views, the pace of the game is wrong for that. As for how combat works, I don't know, but there will be large lulls in the entertainment value as you go from point to point. Of course those streamers are not streaming this any more, there are other games that are better for a stream.
As for how hard the game is to learn, it wasn't that hard for me. Granted, I've tried really hard to avoid combat at all costs, so I can't really claim to be a good pilot. I tried to fly with flight assist off, and that was incredibly difficult, but it was clear that one has to turn flight assist off to maneuver the ship effectively in combat or trickier with trickier docking and mining. There is so much information to learn at the beginning, but it's actually pretty well explained, and follows a logical pattern in the presentation.
I have already bungled my way to a type-7 with just doing cargo trips. I just bought a Dolphin for passenger transport options with style. I could use the Type-7 for passenger transport, but I want my passenger vessel to look sleek.
As for multiplayer I have sadly not had much of an opportunity to play multiplayer. I can say the wing option looks cool, but I really want to join a squadron, but I can't figure it out. Honestly I'm asking for some advice on this, but I'll ask in the appropriate forum. I really messed up my first time in multiplayer where I attacked the system patrol with a fighter right off the bat in a bounty hunting mission... I was really embarrassed.
I think this game is amazing. I think the real reason for a lack of new players is the up front cost of getting a set up for playing the game. It's like 250USD for the controllers that I use, and I want the VR head set to really but I don't have the money for that just yet. I think this cost is what is really keeping out new players from this game not the game play. Also this game is very niche so there are not many players interested in it. If you want to know why your friend left from your friend group, that's just asking for emotional damage. I'm going to try and see if a few of my friends would like to play, but I'm not expecting them to really enjoy this game, as it is not for everyone.