The fact that the Bogleheads forum is a useful source of information doesn't imply that Jack Bogle was right about everything.
... or that the Bogleheads forum is right about everything.
Naturally. Like any forum there are a range of opinions there. I think if most reasonable people take an hour to familiarize themselves with an investment plan based on diversification and cost minimization though, they'll see its merits.
The argument that US businesses are already exposed to international issues anyway is a good. By investing in a US index you are unintentionally diversified
The reasons in the link are fairly ridiculous
Please explain. I found the arguments quite reasonable and presented in a non-dogmatic way.