You have three reasons:
1) reading the comment in good faith
2) understanding 'robotaxi' is not a precise technical term
3) safely assuming that most commenters here know about Waymo
There is no reason to choose the most pedantic and smarmily bad-faith reading of the comment.
As for "50 years" - I don't care about electrical engineering, I am talking about intelligence. In the 1970s we had neural networks as smart as nematodes. Today they are as smart as spiders. Maybe in 50 years they will be as smart as bees. I doubt any of our children will live to see a computer as smart as a rat.