Indeed. IMO think of OKRs as a particular tactic. What’s more important is the mindset required for OKRs to serve a company well - accountability, knowing how each person’s role/ task fits into the larger jigsaw puzzle of the company’s mission, psychological safety for people to admit in public that they are behind schedule on their stated goals or that they need help.
Drafting of the OKRs will also be very important and tricky in young companies. The environment may change so much that the OKRs become obsolete within 2 months. That’s where an org. with trust and a leader who shows vulnerability can admit that they need to update the OKRs!
Without subscribing to the mindset and understanding why a tool like OKRs works well, people will treat it as a checklist. So be wary of putting the cart before the horse.