Fair comment that this site doesn't look like it needs a JS framework, but I think it's a little unfair to assume the dev doesn't know about HTML or server side

Fair comment that this site doesn't look like it needs a JS framework, but I think it's a little unfair to assume the dev doesn't know about HTML or server side languages. It's more likely that the OP uses this JS framework a lot and knows it well, so it was quicker for them to build it this way.