Someone invokes culture or tradition to shut down any questioning or challenge.
This is one of the most common logical fallacies: the argument that because something has been done for a long time, it must be correct or should continue. The age of a practice does not make it just. Slavery, foot binding, and child marriage were all ancient cultural practices. The length of time a custom has existed is a statement about its history — not about its legitimacy.
After you respond, they may push back with these arguments. Members get the full rebuttal for each.