MW, you are correct (although it should be pointed out that Rav Yehiel of Paris disparaged it). However, it is also offensive, presumptuous, and frankly just ridiculous for anyone in any generation to look for chumrot on a minhag. Not an issue d’Oraita, not an issur d’rabbanan but a minhag. This is especially true when it comes up against issues like shelom bayit. In fact, I heard that Rav Zalman Baruch Melamed said that he would even go so far as to allow an Ashkenazi eating by a Sephardi to push aside the kitniyot and eat the rest of the food (on Shabbat push aside the non-kitniyot – don’t try to keep a minhag by doing a melacha d’Oraita).
Unfortunately, this has become a burning issue (someone once said that if “lo tignove” were a chumra on a minhag people would be completely honest) with the machmirs denigrating poskim who dare to rule leniently. The result is that many people decide that they cannot deal with almost everything being labeled “for those who eat kitniyot” despite major questions as to the halachic validity of this statement and decide to jettison the whole minhag.