Yes, sadly, the vast majority of extraneous, verbose RT does seem to be heard in the USA, or from US crews elsewhere in the world. Some of the jargon used seems to have a military origin, often unsuited to the civil RT environment.
In those parts of the world where English is not in common use, both the verbosity and jargon sometimes result in cringeworthy RT exchanges that could easily be avoided if brevity and standard ICAO phrasing were adhered to. Ho hum.