My best guess is the term 'streetfighter' is used for the everyday non-trained brawler one might encounter while out on the town or something along those lines,lol.
Martial arts ,like gun defense, is best implemented by training the way you would fight, but first determine why you are doing martials arts, then determine the best tool for the job.
There is a mindset to have and there is no way to train for every scenario.
Barking that a thug would own a martial artist is very generalized stereotyping typical of someone too lazy to train imo.
