I think it is important to pick a static site generator that is implemented in a language that you know. This is because sooner or later something will break,

I think it is important to pick a static site generator that is implemented in a language that you know. This is because sooner or later something will break, or you’ll need to update your dependencies, and it will be frustrating if you don’t remember how to do that because you don’t use the language elsewhere. I initially used Jekyll (written in Ruby) but am now switching to Pelican (written in Python) simply because I personally understand how to keep a Python environment updating and working and do not understand how to keep a Ruby environment working.