There are definitely some things missing from his analysis, but at least he links to the appropriate court documents so you can ignore his analysis and do your own if you're so inclined.
The real questions are things like what version of Linux infringed? Has that code been removed yet? I have to think it would be removed the minute people found out. Was the infringing code part of the main kernel, or something else? I seem to recall a mention of RHEL, so maybe it's specific to that.
That said, it's a real danger. Even if the patented code is removed, they can (and will) go after people for past damages. They're a patent troll, that's what they do. And you can expect all future cases to be filed in East Texas. There's also no more escape clause, because they'll just sue batches of people who are distributed all over the country or world and claim that East Texas is just as good a place as any because no forum would be more convenient.
The best fix for this is to get the law changed to eliminate software patents entirely. Maybe, just maybe, i4i will help with that, but I'm not sure. Reexamination requests are also in order. Hopefully this patent will get busted soon
Ultimately, this is just another reminder of why software patents are a bad thing.