I am an English rider myself and I know EXACTLY the type of person you mean, they frustrate the hell out of me and give the sport a bad name. I am not from a horse family and have always bought my own horses with no parental funding. Resulted in me riding some nutters and sometimes looking like I just left the Rodeo and bucked my way straight into the show ring (much to the disgust of others at times but hey, every horse has to start somewhere right?!)
I'll never forget being at a show years ago and being so proud at placing third on a very green horse who put in his best possible workout for me. The girl who got second left the arena as soon as the ribbon was placed around her horses neck complaining loudly that her parents didn't pay $20,000 for her to be beaten and threw her ribbon on the ground. I was disgusted and briefly thought about tying her ribbon back on to her, very very tightly :)
N.B. I had bought my horse for a slab of beer, not bad for $30 anyway.
Oh and not all English riders despise Western riders, personally I think it is amazing, just wish I knew how to do it all!!!