I agree with you, preset.
If it was
really that difficult for Wx radar to detect the type of hail-generating systems described in this article, then such things would be commonplace.
Wasn't another hail-damaged aircraft (a year or so ago) the result of that company's SOP which allowed the crews to fly with Wx radar off if there were no Cbs forecast along the route....
Congrats on the landing, of course - but questions at the cause.