Sadly, there's absolutely no evidence for them being true, but it's a fact it does make a whole lot fake feelings.
It also doesn't make us more communicative, nor open, it does however makes us less talkative when sober because we believe alcohol does that for us once we try.
If you find anyone who needs alcohol to be themselves, may try seeking in fixing their issues by professional therapist, if it doesn't work, fucking bail. Life is too short to waste time.