Anyone interested in frame compliance should look up video of ISO 4210 frame testing. You don't need me to find that, you need a search bar. And you will see that all frames move around quite a bit. A frame with no compliance at all would be no fun to ride and then it would break.

At least some of you must have had a ride on zero compliance disk wheels for TT. Again no fun to ride. Why it is controversial that shorter spokes at higher tension, taller rims, larger hubs all move a wheel in direction of a disk wheel is beyond me. Everybody recites stiff, stiff, stiff stiff stiff stiff stiff . There are examples available of what zero compliance is and how it rides. You can ride on solid rubber tires too if you think stiff is good.