You probably mean that it takes away Lo Sirdu Ba’umos. Perhaps. I am not arguing on that. Lo Yaalu Bejoma still might be an issue, since that has nothing to do with the Umos.
If you want to use the famous, not too powerful, argument that since the Umos broke their part we don’t have to keep our’s, I won’t argue on that either. It is the idea of disregarding a Gemara as irelivant that I take issue with.
I call it not too powerful since it didn’t help the B’nei Efraim.