1. PC Ports of older console games seem a lot more common to me, now. I might hazard a guess that the porting process is now largely a lot more automated than it may have been back in the day.
2. The availability of previously Japan-Only games in English seems to have increased a lot. I'm not saying that it's only because of RHDN, but... Anyway, seriously, I feel there have been a lot of translations of games previously only in Japanese to English in the years since.
3. Is it just me, or does it feel like having so many options available at one time degrades the enjoyment of the individual games themselves? It now takes a lot longer to think of what I might or might not want to play, and it is not as enjoyable as it used to be, when I do (notwithstanding that this is likely due to my advancing age as much as anything, but it's also because I am not as good at them as I used to be either). Additionally, I am far more likely to feel like quitting one game to play another instead.
So, to reference your points and give some thoughts:
1.Agreed, but also the reverse is kinda true as well. Switch for instance already has more than 3000 games. Many of them were first released on Steam and only later ported to Switch - in some cases they sold much better on the latter, a second wind if you will. The quality is another matter, but there's always been shovelware (Hoshi wo Miru Hito, all the stuff by Imagineering and maaany others).
2.There will be many fan-translations still, and inevitably fewer and fewer regional exclusives released. It just doesn't pay off anymore to release games only in one region, seeing how the markets all over the world keep on growing steadily in size, and mostly decent translation is more readily available as well. As such, localization will become even more commonplace with each generation.
3.I have the opposite experience. It's way easier to choose now, because you don't have to wait for some magazine to publish a review or some of your friends to buy it in order to share their experiences. You can just see the user reviews, trailers, videos online etc. Sometimes I wish we had the era of CD demos back, but in terms of convenience this is the best things have ever been. I wasted money back in the 90s/early 2000s quite a few times not really knowing what to buy and just going with something random (sometimes just judging by the cool cover art, only to play something horrible afterwards), but now I no longer have that issue at all.
However, it's true that there are more decent games in each genre that you'll ever be able to play (just check any random list on Wikipedia - and they don't even have all the regional exclusives, usually), so there's no reason to play mediocre ones, or the ones in genres you don't like (I'm not big on sports games/simulation games or stealth games, so I simply skip those by default). And, since you can now know easily what's at least considered good, you can try it on your own and reach your own conclusions as well.