For all those who like pointing out innovations that brought into “flowing current” during recent centuries
‘there have been adjustments in Jewish practice over the centuries. Hillel’s prozbul comes to mind, as does Cherem Rabbeinu Gershon on marriage and divorce, and other such modifications. There were promulgated by the great sages of the day in order to preserve the integrity and the spirit of the Torah, in fulfillment of the mishmarti in Vayikra 8:35: “you shall protect that which protects [My Torah].” (see Yevamot 21a and Moed Katan 5a)