Great questions. From my experience and that of the others in the rocker group, no one has pointed to a rocker adding to failures in their trainer. The total amount of movement, even with a loose and active setup like mine, is 2-4* per side in most cases. I hit the limits at 7* only rarely.
The lateral physical displacement is also minimal (although I have never actually measured, I’d be surprised if the flywheel moves more than 1" total, side to side (in the arc of course).
Something capable of holding that flywheel up to the speeds we can hit at a 53x11 gear should not be hampered buy the motion from our rockers. Happy to see data clarifying issues, but my experience shows nothing to worry about in that light.
Wahoo’s claims to having fixed the issues with this model are questionable and I will be interested to see what early buyers experience over then next couple of months.