ROB, if you think infestation, and the need to check very carefully, is a new chumrah, please check out Chochmas Odom 38: 15-20 who lists a large number of vegetables and fruit which are problematic. “????? ????? ???? ????.”
You can also go back to Meiri (Chullin 67a) for an example of the issue brought up in Rishonim.
Also, why do you assume that the worms in strawberries are ????? ?????? Even a safek would be assur.