Ask HN: Do you have to be the most knowledgeable dev to be a great tech lead?

Yes. It's definitely true that soft skills are also required to be a lead, but you have to be knowledgeable in the first place.

If you don't have the skills to solve the toughest problems, you have no business being a lead. The essential thing that makes a lead a lead is technical leadership.

No, but you have to very good at problem-solving. You also have to have soft skills to relate to people and work with them to solve the problems you encounter.

It's impossible to know everything but with the help of your team and hard work, you should be able to move forward.