This is nonsense. You're allowed to criticize a system without having a solution. For what it's worth, I've worked at a few OKR driven companies and it sure seemed like a waste of time. Metrics and measurements shifted, goals changed as the product changed, and we wasted time measuring the thing instead of doing the thing. The measurements for OKRs never lead to meaningful action. Meaningful action was driven by customer interviews, market analysis, and R&D.