base tag needed or not?

https://github.com/vercel-labs/mcp-apps-nextjs-starter/blob/adca42ccaeda3c34a322808b51f70200f14e3c89/app/layout.tsx#L40-L49

This doc comment block claims that no <base> tag is needed, but then the function implementation goes on to render a <base> tag. Can you clarify this?

The mention of CesiumJS, which is not used in this project, is also confusing.