@ zahasdad: it seems that you didn’t read well what HaLevi wrote. he didn’t intent to make Kulahs, he instead only strengthened it by saying that the reason that those who keep this Chumrah – Halachah is because of early Gedolim such as Rabbenu Bachya & of course the later great Gedolim as the Beit Yosef.
I actually saw one eating sardeans & drinking milk together & he was choking on every sip, etc,
Torah is life.