Fwiw there is a checkbox if you want to absolutely minimize walking. It'll often do things like drive around the block so you don't have to cross the street yourself.

One thing I actually think is really cool about the Waymo ux (full disclosure, I work for Google but not Waymo) is how it elevates the pickup/dropoff locations to feel like more of a first class feature (compared to just typing in an address and your Uber driver dropping you off in the general area).

I don't think I've ever had to walk more than 30 feet to a pickup location, but I have had it drop me off at the nearest cross street (usually on streets where it would've had to double park in front of my exact drop-off location)