I've noticed that "people with issues" tend to go 'overboard' on any pastime they take up; if they do cycling, they either go full-kit on the MUT, or else they go fixie-bro-goon style. It's basically a version of cosplay for venting their frustrations of life. You can usually spot these borderline sociopaths from a mile away (although in this case, the angle of approach seems to have been working against you). Carry pepper spray; it can be VERY useful in situations like this....