I can't say I particularly agree with this statement. The 2023 team would have scored plenty of runs if it were not for 8 of the position players simultaneously taking steps back at the plate and overall value. Basically every holdover player on the roster had a worse overall season in 2023 compared to the 2022 season. On top of that the bad overall offensive result was primarily due to the team inexplicably being unable to score at the Rogers Center as they were a top 10 offensive club away from home.
In 2022 the combination of Bo, Kirk, Springer, Chapman, Guerrero, Jansen, Espinal and Biggio combined for 26.8 FWAR. Fast forward a season later and the same combination of players provided a total of only 15. 1 FWAR. Some of this was due to injury, a bit of it was due to lower defensive contributions, but the bulk of the lost FWAR was due to bad worse offensive seasons across the board.