In my world saying that "something may be something for other people" doesn't equal to "personally assuming that something is something". But I understand where you come from.

For me the thinking & debating exercises doesn't have to involve taking a position personally. Sometimes I just want to focus on the argument. My own position & assumptions are irrelevant.

For that reason I don't appreciate it when somebody makes an assumption regarding my assumptions to attack myself instead of focusing on the argument.