You know, Irish Traditional Music is a broad and diverse church. There's such a variety of opinions on all sort of thing it is easy to find a quote to support an opinion.
Sure, some will have said the influence of the 78rpms was detrimental to some aspects, the old country fiddlers putting down their instruments because they could never come up to that standard is one that is brought up some times. On the other hand some of the finest exponents of the art listened to the 78s in minute detail and enriched their playing with new tools and means of expression. Were Casey, Canny and the rest of them misguided? I don't think so.

In other words, there are many sides to these issues and vast ranges of shades of grey.

It's easy, and perhaps lazy, to come up with an 'so and so said ..' and make the point it therefore must be true, if the argument is not fleshed out a bit.

The 'jungle music' thing was widespread, I think it originated with the church but I have heard several of the old musicianers use the term.