PFF - have y'all seen this

In 2022 he had 11 touchdowns to 2 interceptions in the redzone

In 2021 he has 18 touchdowns to 3 interceptions in the redzone

In 2020 he had 15 touchdowns to 1 interception in the redzone

In 2019 he had 15 touchdowns to 2 interceptions in the redzone

In 2018 he had 14 touchdowns to 2 interceptions in the redzone

So beyond bad is a stretch for sure. However, there’s some things like completion percentage in the redzone that he could clean up. I also think some of the issues they’ve had in the redzone have been him trying to do too much since their offense became stagnant all too often. Who knows if our coaching staff can do anything to improve him.
It's not necessarily the completion percentage but the TD rates:
2018 - 23.7%
2019 - 20.8%
2020 -19.2%
2021 - 19.3%
2022 - 19.3%

Those are pretty bad, especially when you tie in the interceptions in the red zone. Hopefully, Sneaky Pete can scheme that clean because just for grins and giggles, I checked 2021 stats, based on volume highest number of attempts:

Siemian - 17/35 (48.8%), 123 yards, 10TDs/0INTs, 28.5% TD Rate, 97.38 passer rating (Siemian also had 1 rushing TD in the RZ)
Winston - 16/21 (76.2%), 147 yards, 11TDs/0INTs, 52.3% TD Rate, 134.33 passer rating (Winston also had 1 rushing TD in the RZ)
Taysom - 7/13 (53.9%) 46 yards. 2TD/0INTs, 15.3% TD Rate, 101.28 passer rating (Taysom also had 4 rushing TDs in the RZ)

Siemian threw TDs at a higher rate than Dalton did this past season.