I also ride a recumbent trike which is low to the ground. A diamond frame puts you up at eye level with most drivers and that makes everything easier.
Actually, I got a fairly strong feeling that Shanghai traffic has gotten noticeably less crazy over time, but I can't rule out that I was just observing the local traffic of different regions of Shanghai at different times.
In Iranian cities, however …
So you don't make eye contact. That's nice. But the issue isn't actually about eye contact. It's about the human having less control over their own well being.
Whether you personally ever look at a driver, it doesn't change the fact that it's a thing that a person can normally do to determine if it is a good idea to proceed or not. It is never wrong to be aware of your surroundings and look ahead into whatever you are about to do next.
If you look at a driver and that driver takes that as some sort of challenge like a monkey, well A: I've never seen that but whatever, anything is possible. B: It doesn't change anything. You still attained the goal of determining what to do. You now know to stay clear of that particular car.
With no driver, and no other form of feedback driven by you, the humans outside of the driverless car are more powerless than they already were. They are reduced to trusting and hoping.
If I do want to yield despite having priority I can do that just as safely without eye contact and if I want to assert priority it's objectively less dangerous (because of that minority) if I do it without eye contact. Nothing to gain, so much to lose. The reality on the ground is what the car does, and I will focus on that. Taking guesses from looking at the driver is counterproductive.