Question on TC service body (no flex anchor points)?

Your pictures don't show any bolt that you could torque down and pull camper mounts?
Also there is not much of standards in TC. They all are build by different manufactures with no respect to anything. Would you have any standards for mounting on utility body - it would be spelled in manual.
So once again, I would trust utility body maker that when they design mounts, they put some thought into it.
If in doubt - drive with the camper on to local RV repair shop and ask them for the opinion.