I think I'm being fair. The guy has not been good for a long time, and he gets the rare 2 year deal from Bloom. (Kike & Sawamura)
Diekman has had a WHIP above 1.31 since in 4 of 5 seasons since 2016. His only season below was the short 2020 season.
It's at 1.361 overall the last 5 years. His FIP is a decent 3.84, but that BB/9 is a killer (5.5). The 12.0 K rate is very nice, but when you walk 6 for every 12 you K, I'm not impressed.
He has a 2.3 bWAR in the last 5 seasons, which is less than 0.5 per season. His fWAR is 2.0 or 0.4 per season.
Fair is fair.