There really wasn’t a golden age, just a lot of rose-colored glasses, fond but not-very-accurate nostalgia for a few highlights, and several dozen different player types, each of whom remember a different aspect of EVE as “the true EVE and best way to play”.
Whether it’s jetcans or wardecs or awoxing or baiting, scams or new player abuse, someone thinks it was the highlight of EVE. The common element among all these people is their notion that turning back the clock to the EVE code of 10 or 15 years ago will somehow magically fix things. (Pro tip - it was broken back then, and would still be broken now.)
Lots of factors made a big difference between then and now: population demographics, range of competition, percent ownership of smartphones, prior experience with other MMOs etc. were global ones.
The amount of public opinion available to a search on “Is EVE good to play”, the amount of “how solved is it”, the number of vet players with over a decades head start on you, the number of niches in the game already saturated, the difference between haves and have-nots - these are all EVE-specific factors that came into play over time.
Every older MMO has trouble hanging onto old and gaining new players, that’s the biz. As you’ve noted, EVE still has plenty to offer newer players - if they’re willing to put in roughly 3-4x the effort they would on a different MMO, for a slower payoff. Which is fine, that’s a workable niche.
However, as we’ve already seen from your posts, in about a year and a half you’ve gone from newbie complaining about the imbalance and lameness of vets vs. newbies, to “if you can’t beat’em, join’em” signing up with the “beat on easy targets for fun and profit crowd” and saying how great that was, to a number of posts recently that point out multiple issues with poor decisions and design on CCP’s part.
Project that forward another 2 years and you’ll be part of the bitchy bittervet crowd you’ve been blaming for the downfall of EVE.
Virtually all the problems that plague EVE were there in some form from the beginning, and you can find complaints about them in the first 2-3 years of posts. They were just being glossed over and ignored because there was still a lot to explore and ‘solve’, and players kept assuming CCP would get around to fixing those issues.
Except… CCP didn’t. They put interesting stuff in the game for about the first 6 years, and since around 2010 they’ve mostly just been stumbling and staggering from one fiasco to the next.
If I was to answer the OP’s question honestly, it would be “Retire Hilmar, Berger, Rattati, and the next top 3 decision makers. Put people who have a clue about the game (like Aurora and a few others) in charge. And then spend some of the EVE money on hiring actual talent to work on EVE and show players there’s something promising coming to them”.
That’s really the only approach that has a hope of success.