I am not sure why you think it is more appropriate to feel slighted when says you are being overly meikel than when says you are being inappropriately machmir.
And specifically when as an example you bring something which you are deriding which is in fact almost universally accepted as the basic standard and not a chumra.
And you have no idea what they had done in Europe pre war, not whether the metzius was even remotely the same as now. (Different types of berries, different location, different bugs)