This general statement is far short of currently being a general norm. But his argument stands if it is being pushed as a norm, with attempts to either formall

This general statement is far short of currently being a general norm. But his argument stands if it is being pushed as a norm, with attempts to either formally enshrine this as a norm or policies that make it easier to enforce as a norm. ... and that just appears to be straightforwardly true in the university system. The quibbles are as to how effective and widespread such a push is.