Honestly, no, but I still love it, and the nostalgia is great. It's not a brand-new world to explore the way it was back and 2000, and I'm a whole lot better at Pokemon than I was back then. But Gold is still my favorite video game, and it's been a blast to explore it again and approach the game from a somewhat more completionist and competitive light from the get-go.
I'm playing slowly. I'm actually only two badges in, at about 11 hours of play time. I play it to help me fall asleep at night (there's nothing like a classic game that I love and know cold), and I've been wasting a lot of time as a result, but I'm having a great time catching everything and training up lots of different Pokemon, including my favorites and ones I didn't use as a kid. Relatively, it's aged well for me, better than most games, and I still feel all warm and fuzzy inside every time I turn it on. (By contrast, I'm really beginning to hate Sun after trying to get through the opening sequence twice per week to collect event Pikachu. So glad that's almost finally over, but it's a shame that I'm starting to feel that way.)
If I were to play Gold for the first time today, I don't think it would be my favorite game (I'm not sure what would be). It's a lot of fun, but a big part of why I love it is the memories I have from playing it 17 years ago. I don't get invested in games the way I used to anymore, and thus, the games I play don't seem as significant now as they did a couple decades ago. But as a nostalgia trip, Gold totally hits the spot.
Crystal would be fun to play at some point, but when it comes down to it, Gold is the truly nostalgic game for me. So for the time being, I'm really not bothered by the lack of Crystal (though I do hope it eventually releases, and I'll definitely pick it up if and when it does). And while Gold isn't as good as it was in 2000 (I don't think any game can be for me at this point), it's a lot of fun, and I think it's as close as I'm likely to come to recreating the joys of my childhood gaming experience.