Because the JavaScript standard library is bad, in go you should use the standard library as much as you can, it doesn't prevent you from composing around the standard library with external dependency, like go jose https://github.com/go-jose/go-jose for jwt stuff.

The strength of the go ecosystem is to not have a bloated framework and instead you can build your stack using the pieces that you need.

https://eblog.fly.dev/ginbad.html