He's a placeholder. A low obp, good power, strong defense guy at 3rd is addition by subtraction over Senzel / Lipscomb/ Vargas. As for Tena, the d didn't impress, so it depends on your projection of him going forward.
Don't think DeJong is more than a placeholder for one of House/ Wallace / Morales. In the meantime, a Tena / DeJong competition upgrades 3rd over 2024