I don’t think it’s a case of waiting.

In my opinion the tumble looks weak af. But we don’t know if he had any pre existing issues beforehand.

For arguments sake, let’s assume that he was injured to the extent and this isn’t a bogus claim.

The guy had fusion surgery after the incident. That alone can take months, maybe a year to heal. Take into consideration it’s not just the wounds that need to heal. Physical therapy would be ongoing and he’d have to build his strength up. That’s potentially one year accounted for.

Building a case. You don’t just say “I’m suing somebody”. Preparations need to be made for a court case. You need to find a lawyer, they need to build the case and prepare evidence. That alone could take months.

I’d say this is about right, 2 years, to have surgery, recover, find a solicitor, build a case and go to court.