“everyone should band together and refuse to deal with any shadchan who doesn’t adhere to basic decency and common sense.”
Shadchanim should band together and stop dealing with people who dont adhere to basic decency and common sense as well (read parents – after a certain age IMO if the parties are not mature enough or smart enough to speak with a shadchan, they should not be seeing anyone for the purposes of shidduchim and it is usually parents who say things that if their children knew about them, would embarrass them greatly).