I see what the user was saying about the bike, although perhaps not the best worded. For example, in the UK it is legal (despite what many car drivers think) for motorcycles to filter in stopped traffic, up towards the front of the queue. Cars should not make moves in slow-moving traffic that would endanger the biker. But, they do not HAVE to leave room for a bike to get through - they just can't make a dangerous move. So the entitled "I am allowed to filter" is 100% true, but a car doesn't have to leave the width of a bike.
Similarly, filtering is illegal on solid white lines, chevrons or other prohibitive markings. You cannot filter through a zig-zag line for example. So if the queue of cars crosses a pedestrian crossing, the bike should not filter through at that point. But I've never ever seen a bike stop at that point...have you? This also applies to the coloured section at the front of the road with a bicycle on it. Cars should stop before this, as should bikes - this is for pedal bikes.
We have a biker at work, who is a brilliant guy, and in absolutely no way rides dangerously or thinks hes above the law or anything like that. But I did have to point out that when he was riding behind me, he often put himself in dangerous situations. He forgot he was smaller and in my blind spot, for example. Whilst it is always the vehicle in fronts responsibility to change lane and merge properly, that doesn't mean you can do silly things and say "Well it's not my fault!". No, but fault doesn't matter when you're dead. My colleague hadn't driven a car before and didn't realise how bad the visibility can be at times, even in a good car.
The problem bikers have is they all get tarred with the same brush. If a car driver does something stupid then he's a dick. But if a biker does something stupid then bikers are dicks. That's ridiculous.
As for driving on a phone - if you do it then you're a dick and should be banned.