yytz- thank you for the quote from one of R’Moshe’s teshuvos !
To put things into their right perspective:everyone is entitled to practice whatever chumros one wants-including not eating some foods. it is when you want to have the whole tsibbur undertake this that it becxomes a problem. Whether it is strawberries, cauliflower, lettuce or other foods, we can only go according the minhagim that have prevailed for hudnreds of years. Anything else is a chumro that should be left to individuals.