Very much disagree on this point - I've both started threads there and contributed to threads there in response, and
twice admins have locked my thread beacuse they claim I had no intention to change my mind in the first place - as far as I can tell, if you
debate people trying to change your view, then you're soapboxing, rather than trying to clarify the argument.
I haven't posted on r/changemyview since. It's not fit for purpose, and in fact many threads consist of the OP saying "Wow, you're right! Mind changed." to a rather poor argument rather than interrogating it.