You can use the Bootstrap build system in any editor with NPM and VS code is no exception!
There is no bloat in a framework when you understand how to use it! With a build system you can decide what to use and what not. You can even take the unused CSS and JavaScript code out of your design. Like with the Pinegrow plugin from Bob Purify Plugin for Pinegrow Updated. So a well designed website with for example Bootstrap can be super clean and fast.
Purge plugin for PG available! Fixed, I think!