I don't mind +/- stats. Like other stats, you need context and that's helped out with other stats or looking at the team's +/-. For example, when we drafted Theodore in 2013, everyone was saying how terrible a defenseman he was due to his D-1 season +/- was -36 and D+0 season +/- was -24. If you looked at the team's +/-, then you realize the whole team was just terrible. In Theodore's D+1, he was a +19, when the team talent had improved.
As for Fowler and plus/minus, you need added context. 2021-22, he was was -9 rating, but his dance partner was +0 rating in Manson. Lindholm was +0 rating while his dance partner, rookie Drysdale, was a -26 rating. The next year, without a stay-at-home D with Fowler, and Fowler was a -23. Lindholm and Manson are shutdown type d-men and Fowler isn't on their level. Fowler did reach career highs in scoring in both those seasons, though.
On a tangent of needing context, the Athletic's adv stat guru Dom L is applying his info as a blanket rather than adding the context of team play. Theodore is an example presented above and Lindholm is an example presented recently as a FA acquisition. Lindholm tilted the ice on a bad Ducks' team (while carrying rookie Drysdale), but many couldn't understand Lindholm was doing that. Then Lindholm on a more talented team with Boston and Lindholm's tilting of the ice becomes easily recognizable. Lindholm is playing the same way defensively.
Fowler and Theodore as similar such that if you place them in a less defensively supported team, then their plus/minus will be in the negative. But if placed on a more talented team, then their plus/minus is positive as their offense isn't negated by bad defense.
Plus/minus is a good barometer of players on the field/ice when the game is fluid such as hockey and basketball, which the latter has added onto their ESPN stats page. Baseball is a static game, where the events can be isolated to be broken down with respect to opportunity and player's talent.