I think yes/no.
There are sooo many great tits out there right now, so many girls going XL, and a handful of girls pushing the limits of XXL. In the "golden age" of big tits, the mid-90's to early 2000's, you could count the number of top girls on both hands. Just like TV back in the day, there were fewer outlets, so you ran into the same handful of big tit stars wherever you were looking for them, be it porn (magazines or video/DVD), feature dancing, and/or escorts. Now, there are a lot of girls that grew up wanting to have big tits, too - and they're getting them. However, distribution has completely changed.
In fact, I think the comparison to "peak TV" is apt:
https://www.vanityfair.com/hollywood/2018/08/peak-tv-fx-john-landgraf-tca-donald-glover-chris-rockI don't see magnificent fake tits becoming a thing of the past at all - there just isn't any place to see them all!! Girls with GREAT big fake tits are spread across myriad sites: Instagram, Twitter, Snapchat, YouTube, Twitch, OnlyFans, Tumblr (less so now LOL), ClipTeez, Patreon, Reddit, XHamster, Clips4Sale, FetLife, JBI, Model Mahem, personal websites, amateur porn sites, professional porn sites, cam sites, chat sites, cosplay, etc. etc,. so on and so forth. They're still out there, but with so many outlets and options (and better access control and copyright protection) harder to find.