Switch hitting is great, if it provides proficiency against lefty and righty pitchers alike.
If not, then it's no better than being a platoon bat. But the Cardinals will be expecting full value for him in trade, making him not much of a value.
In 2019, his most recent season with any significant playing time in the minors, he was a force from both sides of the plate.
As a major leaguer, he's been less than average against right-handed pitchers. That trend has continued in 2023.
If he can't step up his production batting as a lefty, then he's just another platoon bat covering the smaller '"half" of the workload. Another "lefty killer" bat like Garlick and a parade of others, albeit with apparently better defense.
If we're confident David Popkins can unlock the missing potential, where the mighty Cardinals braintrust has failed, then sure, trade away valuable assets for him. I'm skeptical.