I think this is bad advice.  Most distribution packages will be out of date.  Debian Stable is going to be hideously out of date.  Maybe this issue has already been discussed?  Offhand I can think of a few other solutions, but none of them are good.  That's the nature of trying to tell someone how to install something on "Linux" when really there are dozens of different unique systems and architectures.  I just think that an unvarnished "use your package manager" is not the best advice.  Maybe add a disclaimer of "your repo might be old; use 'Generic' to get the latest"?

For similar reasons I think it's bad advice to say under "Generic" "you should use one of the distribution-specific options listed on the right if possible."  As a Debian Stable user, if I were interested in Platform at all I think I would be much better off avoiding the old one that's in the repository.