It was just an example about trading fees. I have VTI and VEA as my two biggest passive holdings at the moment. Slightly cheaper in terms of TER than VT, and no EM - i’m pessimistic about China.
Vanguard has ETFs for particular market segments, you can mix and match however you like.
https://www.bogleheads.org/wiki/Approximating_total_international_stock_market (this page talks about their US mutual funds mainly, but each usually has an ETF equivalent as well)