They have unfortunately read too many SRE/Phoenix Project/Big Tech Management Papers and so OKRs was one thing shoved down our throats.
What I've found is that they've hired a slew of Product Mangers (tm) who mostly just sit in between devs & users, without coordinating cross team, actually writing specs/Jiras/roadmaps, etc. So each teams devs wrote their own OKRs, in ignorance of what users (who might be other tech teams) might actually want or what other teams OKRs are.
For example, to use an analogy one team builds the foundation and decides their OKR is to use 15% less concrete next year. The other team builds frames and decides their OKR is to make the average building 15% taller next year. If any of them talked to actual final customers, they'd have found out the customers actually desire the buildings to be more robust to storm winds.