I think Guerrero's swing is mechanically broken. It looks to me like his weight transfer is basically not happening at all anymore and it's leading to him being late on everything. I don't think he's going to end the year as a 130 wRC+ bat that his skill set requires to actually be a useful player and if he's not traded sometime this season or early in the off season I imagine he's a non-tender candidate.
I know he's under performing is his expected stats so far this season, and did in 2023, his sweet spot and barrels have dropped from a peak of 50th & 90th percentile in 2021 to 79 & 5 in 2022, 72 & 28 in 2023 and 65 & 5 in 2024. His fly ball percentage, most of his home runs are classified as fly balls, has dropped from 36.5% with only 7.7% of his balls in play being infield flies to 28.8% and 10.5% being infield flies. Ground ball rate has gone from 44.8% to 51.5%. He stills hits the ball hard as f*** but I think because he's so late on everything with zero discipline of the strike zone and likely pushing to try and make stuff happen he's made himself a useless player.
I'd honestly rather see Horwitz starting at 1B for the rest of the season.