They have no cross-links, so up and down to space is going to happen multiple times in many cases. Second, they will not have data centers or ixps right where Google's ingress is, so it has to traverse fiber for quite a while. Someone gave some real numbers on the last SpaceX thread, but I believe that part alone will be 20-30ms added.
They do not have cross-links. They were in the original public announcements, but none of the current satellites have them, nor have they announced when they would be launching some that do. It's likely years away.
That's a claim musk made, but they already have over 500 launched without them. They should have 1000 by year-end, so it's unlikely they'll be able to use them for a couple of years.