Yes, it's interesting that the overestimate seems to be occurring on both sides. If more people realized just how small the whole LGBTQQetc. minority is, attitudes around these issues would be a lot more relaxed.
"more relaxed"? What does that even mean? What is uptight exactly?
I'm not making this argument at all, but apparently some people are; they seem to be saying that we should be extremely careful not to underestimate LGBT percentages, or they might be mistakenly regarded as "too small" of a minority to have legitimate "rights".
Which strikes me as deeply weird, given that this whole range of notions of "rights", "agency" and so on and so forth are meant to apply to the individual first and foremost; who is, by definition, the smallest and most vulnerable - and, all too often, the most heavily oppressed minority of them all!