I disagree. It does matter.
This is a forum where more than the OP are going to read the replies and get value from the advice given. It's too bad if someone doesn't like it when they don't get the precise answer they expected. Is he paying for this advice? No. So skimming through some replies he doesn't want to hear is the small price he pays for having fellow professionals take valuable time to try to help. Whether he finds value in the advice to upgrade his software or not is irrelavent because OTHER people may read the advice and realize how foolish it is to hang on to software that is 8 years out of date. There very fact that he started this thread proves the point.
I repeat my question . . . how is he able to edit 4K XAVC-I in Premiere CS5? If the answer is that he has to transcode, then it just further illustrates what a dumb business decision it is to hold onto old software. But maybe that is not the case, maybe he has some method of editing native 4K XAVC in CS5. If that is the case then I'd very much like to learn about it.
No, it doesn't -- he has a question about the software he is using, and others may have the same question.
I'm saying, as a moderator, drop it and just tend to the question he asked. Anything about how he should be on newer software is NOT helpful.