[doktrin]

I think you're reading the parent's comment in a particularly negative light. My take-away was along the lines of "take a cab, because it's too far to walk".

I might disagree slightly in that it's easy to hop on metro or BART from the Mission, but if you're in the marina I think taking Uber downtown is totally defensible. Hell, if you're new to the city and don't feel like mucking around with public transit taking a cab is a pretty routine thing to do.