I like to fly space ships around in an open universe. Elite scratches that itch for me and has since the 80's.
It feels a little weird for people with 1000's of hours of playing time to complain about lack of content. Why are you playing this game so much instead of another game?
I think we all have ideas that could make the game better. However the devs made a game with realistic scope. Is StarCitizen a finished product yet? It has a lot of the ideas that I've heard people ask for in Elite.
Take breaks from the game if feeling burned out. I stopped playing for two months to play through Subnautica. It was an awesome experience and now I'm back to Elite and feeling refreshed.
I have something significantly exceeding 4,500 hours played according to the in-game stats, very little of that is sitting in stations or otherwise inactive, virtually none of it was AFK. I am not bored, I continue to play.
What I don't do is follow how-to guides or ask for advice. I try to work things out for myself. I never completed the original Guardian puzzle, I never worked out what the UA coded message was, others I have figured out. I don't expect others to play as I do, but I do think a great deal of the complaints about the lack of challenge are from players min/maxing their ship loadout, their revenue stream and bypassing the (imo) best parts of the game - figuring it all out.
I'm not against using help, but I think it's a poor show to copy the other guy's homework then complain there is no challenge. Of course there was no challenge for you, you just googled the answer. So the only gate FDev are left with is repetition - a test of endurance.
IMO, this is why the game is the way it is now.