I practise because to me it is not practising but enjoyment of playing because i want to try to do a good job, and i am happy with the sound i produce[ some of the t .
Jiggers , would you turn up at a classical music perfomance, pay money or[ if free] expect the whole orchestra to be out of tune and out of time, would you turn up at a folk concert and expect a folk perfomer lets say peggy seeger or leon rosselson or show of hands to play out of time with each other and be out of tune all night? no you would not.
your friend might get enjoyment but there are undoubtedly people who stay away because of her and she annoys people with her pig horn, so is she more important than other people?
i remember a bombard player in the north east of the uk who emptied rooms quicker than greased lightning with his bombard and hurdy gurdy that was badly played,
are you a masochist do you enjoy musical and intellectual flagellation, if that is your idea of fun, enjoy it, but do not inflict it on other people without asking .