The Vanguard web experience isn't great, I agree. But if you set up a recurring automated purchase you rarely need to log in and mess with it. Set it and forget it.

Viewed another way, I would say the Vanguard fund costs are low for a reason. It seems unfair to expect a Mercedes experience for a Honda worth of expense ratio.

The Vanguard website/experience is definitely not that user-friendly/modern. That's the main reason I usually recommend Betterment to my friends instead.

How much are you willing to spend on a nice user interface? The whole point of passive investing is that you rarely interact with your account.

Even a slight difference in fees is worth thousands in the long run.

I am sorry but "casual investors" should be doing long term buy and hold because if you can't be bothered to spend 30 minutes on research to compare brokerages, I am genuinely horrified at the idea of you doing anything other than buying and holding an index fund.

Robinhood's encouragement of the instant gratification, poorly researched trades is going to end badly for many of it's customers when we enter a bear market.