"Email is dead" is a running joke in the email industry. "Chivalry is dead" is a trope with the MRAs. I'm a firm believer that trolling is a lost art- a good troll, like "It's a little-known fact that Starfleet Captain James T. Kirk's middle name was actually 'Timmy'" is now lost in the noise from people who think "STFU HOMOFAG LOL" is a comment worth posting.
But if nitwits are genuinely concerned that flirting is under threat by anti-harassment policies, then I'm calling it: flirting is dead.
And years from now, I will make a killing, giving expensive seminars where I instruct people to repeat these words: "That's very interesting. I have to go now, but I'd love to continue this conversation later. Some friends of mine are meeting in the bar at six, if you're free, love to see you there". And perhaps add useful tips like 'have friends, and also have them in the bar at 6' and 'no touching' and "don't be creepy" and 'showering is good' and stuff. Oh, and "don't open with 'I like to have sex while dressed up as a leopard', because that's kinda something you want to ease into, maybe a third- or fourth-date topic".
...y'know, if we do this right, we can be a positive force in shaping the dating habits of the knuckleheads AND eliminate some harassment. Ugol's law! There's somebody out there for you! And not being creepy INCREASES YOUR CHANCES!