[Question] How reasonable are concerns about asking for patents to be lifted for COVID-19 vaccines?

I have intuitions that lifting patents for the approved COVID-19 vaccines would do little as the technology is a higher barrier then just licensing the patents. It feels to me like calls for opening up patents mostly come out of political reflexes without any underlying analysis of the impacts. I’m however open to updating to a more informed view if someone looked into the issue deeper. Has anyone a good grasp on the issue?