The guy's a passive aggressive *expletive deleted*bag. He doesn't have the stones to confront someone using their phones legally, so he has to break the law and avoid confrontation.
I've never understood why some people get so torqued off at a loud person on a cellphone in a public space (ie bus, not a library, movie theater, museum, etc), but aren't as bothered by two people having a similar loud conversation in the same locale.
Chris