Purists are usually a bit new to the game , or too set in 'The Old Ways' to change ! When I first got into British Trad Jazz . I thought it wasnt a 'proper' Jazz Band if it had a Guitar rather than a banjo , and a pino and ANY Saxophone ! Then I discovered a re issue of Louis Armstrongs first recordings with King Oliver in 1923 . NOT just a piano , but Jonny St Cyr playing a Six String Banjo tuned as a guitar . and on THREE tracks an Alto Sax !!
No Purist Crap from THIS kiddy , and the same thing goes with Folk
Song ! The more you KNOW the less you are inclined to be Fixed in your views