The issue is no one is paying interior guys for sacks and TFL these days. Interior guys are simply not getting them at very high rates, I'm not even sure if a single DT reached 10 sacks this year. NFL.com has OSA 14th in all of defenders in total pressures, PFF has him 24th.
Average time to pressure in 2024
OSA - 3.02 seconds
Parsons - 2.74 seconds
Jalen Carter - 2.68 seconds
Milton Williams - 3.09 seconds
Quinnen Williams - 3.00 seconds
Average time to sack in 2024
OSA - 4.56 seconds
Parsons - 4.80 seconds
Jalen Carter - 4.85 seconds
Milton Williams - 4.94 seconds
Quinnen Williams - 4.60 seconds
You can go on and on forever, but all the data seems to indicate that OSA is nowhere near the elite group, but is right in with the next tier. Ed Oliver had some of the best pressure numbers among DTs this year and only had 3 sacks. He also never hit double digit sack numbers until after his rookie deal, similar situation with a guy like Javon Hargrave.....always had good analytic numbers but didn't show up on the stat sheet until he had his breakout year in Philly. There is simply some randomness around sacks and it takes a complete team effort.
OSA signing something in the low 20s is still about 30% lower than top pay at the position. Unless he is playing hardball for more I dont see the issue in bringing the guy back, no.