RP were 4th in the WCC that year, behind Merc, RB and Mclaren. He was 4th in the WDC, and scored 125 of his teams 195 points (a greater percentage than Vettel managed when he replaced him the year after). Beat an RB, both Mclarens, both Ferraris. If you don't think that, or anything he did before that is impressive then clearly you just don't like him. Comparing most drivers on the grid to a Hamilton or Verstappen is unfair, they are going to go down as two of the all time greats, so it's a pointless comparison and completely meaningless in this discussion.
Also in 2021 he only scored 36 points less than Bottas. The difference on the WDC if he'd driven a bit better compared to what happened in the last race (14 point swing due to him/Masi) would have less effect imo. He also may have cost Max points as well.
Sorry I thought you were referencing the 2021 season, not 2020, my bad.
Finishing 4th in a RP looks great on the CV but whilst he did finish ahead of a RB, McLarens and Ferrari's... did it turn out to be evidence of him being a top driver ? Not really. It's so hard to build an accurate judgment of a driver from results like that, he finished ahead of leclerc, sainz, norris etc but he's since been shown to not be on the level of those drivers. As always your teammate is the true benchmark of talent and he's had two top drivers for team mates (Button and Verstappen) and they both comfortably outperformed him, with Max basically destroying the reputation Perez had built from the 2020 season.
It's not like he's just losing to Max each race weekend, he's regularly getting outperformed by people in clearly inferior machinery to him.
Ultimately 2020 made him look better than he was, the cold harsh reality of how big a gap there is in talent between him and top drivers is clear to see now IMO.
All opinions though of course, I am more critical than most when it comes to judging F1 drivers, but it's out of frustration at how large the difference in talent is between many of them, the top tier of motorsport should not be like that.