Blanket statements are common everywhere. It's hard work prefacing every comment with "in my opinion, based solely on my own experience, the majority of xxx types (taking care not to define XXX in any sexist or racist way) are yyy (taking care to express YYY in a non-offensive manner), except for the exceptions, of course".
Quite apart from that fact that all that takes AGES to type on a smartphone with no proper keyboard (the main reason why half my posts are no longer well argued or decently structured and contain numerous spelling errors and lack of capitalisation!). Anyone stalking me knows when I am on a bus......
To some extent I agree with BE's statement - I prefer to discuss stuff openly without too much of a "PC element" creeping in.
Having said that, I thought the jokes at the expense of the OP on the lesbian thread were not necessary. That was not a "discussion" thread, it was more like a "fact" thread and at minimum whoever is making jokes might at least have provided some useful information. If the others had not jumped in, the newbie OP might have thought that BE really did want to go to the party with her - just like if someone had posted "cool, I'm in" on any other "do you want to go to this event" with me thread.