I think a huge part of the value frameworks bring is a common vocabulary. Whether or not it makes it easier to write code might be debatable, but it absolutely help scales communication and decision-making. Everyone in your org building UI components knows what the expectation is. And new joiners can be onboarded quickly if they have experience. Using a framework and a strict linter is probably a tax on productivity when it comes to churning out code, but it's a major booster to the time it takes to understand code written by someone else.