I take the biggest issue with #4. If you had bought at the very highest peak of the great depression, held on and reinvested your dividends, you would have been back to even within a few years. I consider that a "reasonable period of time," especially for a crash of that magnitude.
And #2 uses bizarre assumptions. If my portfolio goes down 20% and I'm paying a .5% ER, yes, that sucks. If I'm paying a 1.8% ER, it sucks quite a bit more.
But, it's a advertisement masquerading as an opinion article. What do you expect?