When I have to work with code built on a frameworks -- usually Laravel but I've had to deal with CodeIgniter and several others -- the Achilles' Heel of frameworks becomes apparent: the application gets built around the framework, then framework code and supporting dependencies get updated in breaking ways, and you have to decide to either rework a lot of already working code, or keep what you have and fall more and more behind. That happens with every framework -- I have a project stuck with Bootstrap 3 for exactly that reason.
Go explicitly promises no breaking changes in the language or standard libraries. PHP does not make that promise but has more or less avoided major breaking changes over the years. Why would you give that up to get a little bit of early-stage traction from a framework?
Ideally an application has no external dependencies beyond the language(s) you choose and their standard libraries. Every dependency you add introduces another point of failure out of your control, back-compatibility problems, and possibly the dependency falling into obsolescence, or hijacked for a supply chain attack. I know writing non-trivial web apps without any dependencies seems impossible but I prefer aiming for as close to zero as possible (and carefully vetting every dependency introduced) rather than starting out with a huge set of dependencies such as Laravel or this Go-based clone.