If the mental health professional then decides you should be involuntarily committed or detained in a mental health facility, you're screwed.
I applaud the motives behind #itsoktotalk but if you do talk and they strip you of any decision making, then this campaign will fail. The result of talking about thoughts of suicide very often leaves the sufferer in a mental health facility - or waiting for hours in a stressful ER room (or worse) and you won't be seen to at all.
The hashtag should be #itsnotoktotalk
Especially since there's already an active, well regarded, tackling stigma charity in England already: http://www.time-to-change.org.uk/
https://sanctus.io/
Both seem well-intentioned but make me deeply uncomfortable. I suppose the fundamental reason being that if you want to destigmatize mental health issues, maybe you should destigmatize seeking treatment from mental health professionals first.