Following the herd is safe but

Is it OK to buy index like vwra but you gonna know it's a herd strategy to have low return (relatively). It's unfair to bash someone just because they prefer other etf like voo or do their individual stock picks. I see this happening quite often in reddit subs, where if a sub is pro vwra not others, you'll get downvotes if you support others.

How is this a useful sub if we're bias and close minded?