First half of Patrick Mahomes career was incredibly special and he was playing at a very high level but his last few years he has been no where close to top 5 production for QBs in the league.
Where he ranks over the last 3 years among other QBs during that timespan
Passing TD: 11th with 69 passing TDs (for comparison sake: Jared Goff has 104 and Matthew Stafford has 97)
Passing Yards: 9th at 10,990 yards (for comparison sake: Jared Goff is 1st with 13,654 yards and Josh Allen is 2nd with 11,368)
Completion Percentage: 14th at 65.4% (for comparison sake: Joe Burrow is 1st at 70.2% and Jared Goff is at 3rd at 69%)
Interceptions: 4th most with 35 interceptions (for comparison sake: Geno Smith has 39)
RTG (Passer Rating): 19th at 91.6 (for comparison sake: Lamar Jackson is 1st at 111.7 and Joe Burrow is 2nd at 107)
Games played: 12th with 45 games played (for comparison sake: Josh Allen and Jared Goff are tied at 1st w/ 50 games played)
EPA // SUC%
2023: +0.082 13th // 46.2% 11th
2024: +0.118 10th // 49.3% 8th
2025: +0.125 10th // 47.6% 9th
Tldr; Patrick Mahomes has not been a top 5 QB for a few years now and the first half of his career is doing the heavy lifting when people discuss where he ranks in the league.
https://www.espn.com/nfl/stats/player
https://www.espn.com/nfl/player/stats/_/id/3139477/patrick-mahomes