If I’ve said it once, I’ve said it a million times… most of the “How to play Elite Dangerous” guides I’ve seen really should be called “How to ruin your ED experience by exploiting this one weird trick.” The way this game is designed, outside of some very niche combat scenarios, almost everything in the game can be done in the starting Sidewinder just as enjoyably as your “100 hour” ship… which I suspect would’ve taken a quarter of the time if you’d ignored said “How to” guides, and just played the game, collecting engineering mats whenever the opportunity presented itself.
Totally agree. I also feel the same way about meta builds. Yesterday I got my new Guardian Plasma Cannons from the latest CG, and I built a new DBS just for these. Of course it's shieldless (more on that in a bit), and it's anything but a meta build. What engineering I did is G3 max, and I only had to visit Felicity and the Dweller (using my default pinned engineering for armor). The hardest part of building the ship was flying to the engineer bases, LOL.
When I came back from the High RES test, I was at 10% hull. Now that was a thrilling run! And while the DBS doesn't have a proper damage model like the Anaconda, it "wears" its damage stickers well, making it look properly beat up. I was definitely punching above my weight with those plasma weapons, but being shieldless and not the best hull tank made combat challenging and properly "realistic". I really shouldn't be able to go into a HAZ RES in a small ship and farm wings of pirates forever without any fear of damage - that's "How to ruin your ED experience" in a nutshell. And when people do this, using their meta builds, they complain that combat is boring and offers no challenge. Well, that's what you get for playing the game on the easiest setting, LOL.

BTW, I'm not "self-nerfng" in a "I'm going on the battlefield naked without clothes or body armor" sort of way. In my DBS, shields are not an option, as I cannot power them with my armament. Heck, half my systems power down when I deploy hardpoints as it is! In my Cobra, I
could run a shield, but that ship is built for stealth, so why install something that'll be turned of half the time (silent running)? Again, not the meta, but way more fun IMO. That said, I do have a shield tanking Mamba for CZs (when in bullet sponge town, do what bullet sponges do), but that ship also is no meta, and I find CZs challenging enough.
These days my boredom with Elite comes more from the repetitive nature of combat - every CZ and RES and mission is basically the same, only the scenery changes. Compare this to a game with proper fleet mechanics like X4, and it feels pretty shallow after awhile. Still, it's a fun "arcade game", especially when flying non-meta ships where being destroyed is a real possibility.