> Julia is too "trendy" in certain circles (finance bros) for a lot of scientific computing types to take it seriously and invest a lot of time into it.

Isn’t that either ironic or hypocritical? Rejecting something out of hand because too many people like it is just as superficial as embracing something on account of many people liking it.

Either try it and reject it, or ignore it. But Too Trendy is not a good reason.