It's one of the most used and most known languages. There is no issue recruiting.

Better yet, it's been widely used for a while, so there is no issue recruiting experienced developers.

I wasn't talking about Java in particular. Instead, I was focusing on this sentence:

In general, nobody cares what the tech stack powering a solution to a given problem is.

When I choose a tech stack, I'm always concerned about recruiting. Some stacks are easier/cheaper to recruit in than others.