I don't think this is a charitable interpretation. As a business, you need to be able to backfill positions or hire more when the need arises. If you use a language that's very commonly used, it's a lot easier to hire. There isn't anything sinister to that, it's simply reasonable.

There was a post, I think on the Uber engineering blog, that stuck with me. It essentially boiled down to: it's easier to change the tech stack than the hiring pool, and talked about deliberately setting something up that was technically less optimal but easier to hire for

Corollary: it's perhaps easier to throw money at fancier hardware to improve performance, than the alternatives