If ever there were a better argument for eschewing app development in favor of the mobile web, this must be it.
I feel like your more recent question is not directly related to the previous points (so maybe I'm misunderstanding), but I'll answer anyway: no, I don't think hackers should worry too much about patent trolls when building stuff (or else the trolling is working and limiting creation), but I do think hackers should make a stink when patent trolls do their thing--especially when they do it to the little guy.