There's two purposes to review. One is to enforce ownership, and the other is to provide mentorship.
Even if you don't have ownership, mentoring is still useful.
I get asked for review by teammembers on an area I have expertise in.
Their solution might work but cause problems later. With review, I can knowledge transfer my lived experience so they don't suffer like I did.
The third purpose to review is stylistic nitpicking and formatting as a simulacrum of actual work. This is useless and turns people off from review.