When there’s evidence that it’s either deliberate or a back door? Those words have specific meanings and WebRTC doesn’t fit that description.
I agree it’s not a back door but if you’ve been put on notice of a serious security flaw then after a certain amount of time I do think your failure to take corrective action is “deliberate”.
Should at least warn you, "this site wants to use WebRTC, this will reveal your real IP address. OK?"
How serious is it, really? The vast majority of users will connect to a web server with their IP anyway so I’d assume it’s more a question of weighting it behind other privacy improvements — for example, ad blocking and tracker protection are probably making more of a difference for most people.