Many decent, reasonable people would regard having their precious car damaged in such a fashion as "provocative", to say the least.
What that stupid woman did with her car was utterly wrong, and she has been prosecuted for it. Is it really the duty of a passing cyclist to mete out punishment to law-breaking motorists? Should that punishment (if it is the random passer-by's job) be to deliberately damage the offender's car?
I would answer "no" to both of those questions. She broke the law by using her phone while driving. He broke the law by damaging her car. She compounded her offence by chasing him and running him down. But. Would she have done so if he hadn't damaged her precious car as a punishment for committing an offence which wasn't actually affecting him in any way? Most probably not.
Hopefully Ms Henshaw-Bryan will learn something from this and behave a bit better when next out on the road, sometime next decade. Equally hopefully, Mr Doughty has learned something from this and won't behave like such a dick in future.
It is a tale of two idiots. A plague on both their houses!