Are you implying that all patents are bogus or just this one?
As was pointed out in the post you quoted it takes time to get the patent, a lot of time in some cases. As long as you have documented the original invention that is a matter of public record while your invention was being reviewed. There is some suckiness in these matters and I am not going to try and defend FlightPrep, especially since you have already made up your mind as to who is right and wrong in this case, but I will mention that the system is what it is and has been this way since it was created in this country. Something even worse than these computer software patents are the genetic ones. A whole new effort to patent data in that field. Unheard of until about 20 years ago when the genomic patent gold rush began.
Not all software patents are bad. Lots of things these days are software patents. In Europe there has been some attempt to divide software patents into categories that make more sense and eliminate the types that are abused, like this Flight Plan one. But that has yet to catch on here so far. When we have software power houses in this country I doubt their lobbyists would allow that type of change to occur. Which means we are stuck with these types of abuses for the foreseeable future.
Flight Prep has chosen a route that I do no think serves their best interests. But they are within their rights to do so until someone challenges the patent. I see Dave at RF is now going to do that. He states that for now he is not going to use a patent attorney to draw up his arguments and I do not think that is a good idea. I know there are people who have offered to help in this area and many others offering financial aid. I hope he comes to his senses and takes them up on that.