Yes it is true but we stutterers might have a problem with dopamine receptors and we might have an "addictive nature" which makes us binge anything that gives big dopamine hits. Porn can raise dopamime by 300% for long times which is quite huge compared to other natural rewards. After a night out drinking, I would fap several times during the hangover and after that I'd be barely able to talk at all. It could be mostly just about anxiety but who knows.