The "no debate" thing seems really odd and control-freakish on their part, I'll give you that. But if you look at people trying to make tech a more inclusive community and call it an "invasion," you're reflecting the exact view that made movements like this pop up.

If "the good old days" were really that good, why have women been almost intentionally excluded from IT until relatively recently? Do you mean "good" for people in general, or "good" for you?

When you say "we are being invaded," who is "we"? White men? People who are already "in"? More importantly, who is doing the invading? If women say "hey, these are small, tacitly accepted things in tech culture that make people uncomfortable," do you seriously think that statement is persecuting you? They're not trying to control your thoughts, they're trying to get you to be less of an asshole.