I don't want to dox myself by getting too specific, but yes it's essentially a frontend framework for backend engineers in a niche lang (at least, niche for frontend). So they'd just hire more backend engineers in their language of choice.

I think this might actually be fine for internal tooling, but this is a customer-facing web app. It's now incredibly clunky and every feature takes an age to get out. Full page reloads for everything, etc.