There was numerous commentary on the case at the time, much of it more informed than I am, I'd recommend you read them. It seems she stepped out and he opted to yell at her rather than slow significantly. She panicked and stepped back (not an exactly unusual response). He hit her. She died (again an unlikely event). Personally, if I had killed someone, I'd probably not take that as my cue to take to social media to berate her and then lie about her being on a phone. Pedestrians step out into the road. I'm of the odd and perhaps overly liberal belief that the punishment for a moment's inattention or distraction shouldn't be death. And to be honest, I think referring to woman who died as a 'lemming' is pretty cruel and unthinking too.
Anyway, he yelled and tried to cycle around her. It was debatable if he'd have been able to stop considering the lack of a front brake, but he should have had one, and there's good reasons for that, not to mention it's the law and the ignorance thereof isn't an excuse. I don't really have much sympathy, it's an attitude I've seen too many times and not any different from the drivers who also believe everyone should get out of their way. Pedestrians are the most vulnerable category of people on the roads and that vulnerability should be respected.
Yes, I'd agree that had he been driving, I doubt he'd have been charged or found guilty of any offence. That's sadly too common. But that doesn't make it correct that he shouldn't face sanction – just that drivers should receive the same. I'd also agree that remorse is easy to feign and perhaps shouldn't play such a large part in court proceedings, but he doesn't seem he put much effort into trying to appear anything other than callous and unsympathetic.
None of this changes the fact that it's a preciously rare event. Cyclists don't, on the whole, kill pedestrian (three deaths, blame only attributed to the cyclist in one). I don't know how many injuries but I do know the numbers pale in comparison with the deaths caused by drivers. A fact we're either sadly inured to or simply don't want to acknowledge since in doing so we'd also have to accept that we need to do things differently. That's sadly not a lesson being learned from this and pretending cyclists are the problem is a nice scapegoat, a deflection. It's like ignoring the hungry tigers gathering outside and asking what we're going to do about the rabbits, someone might trip over them.