The claim that PS5 Pro is expected to be the best console created is purely opinion.
The claim that GTA 5 beat record sales is untrue, according to IGN and GameSpot, two reputable gaming sites. I think it's also important to note that the most of the links in this article lead to other articles on Toms site, which are opinion pieces. The language in the second to last paragraph is important to note too. They are not claiming it will surpass, but could be able to rival some high powered PC's. The specs for this console were linked in the article and reported by Moore's Law Is Dead in a Youtube video, which has since been removed. Unfortunately in my eyes, I cant put to much stock in those reports.
Based off of this information I certainly think the PS5 Pro has a lot of potential to be the next best gaming console but again, its opinion. I still believe the Gamecube is the best console ever created, despite it being 23 years old.