Author recommends VTI over VOO for new investors because total market exposure is an evolution of the S&P 500, while existing holders can keep either.
VTI — LONG The author suggests new investors choose VTI over VOO because VTI represents an evolution of what the S&P 500 was trying to achieve, offering broader total-market exposure. For those already holding either fund, continuing is fine because the two perform similarly. No specific catalyst or time horizon is stated.
If you don't have either: VTI probably, as it is an evolution of what S&P 500 was trying to do. If you already have one or the other: continuing with that one is fine, they perform so similarly.