My mentor told me once: "The guy who throws the bomb doesn't make it over the line" It's good practice to kill with kindness sometimes, it turns out.
The fact that Mamdani just seems like a cheerful normal guy who's policies are things like "we're going to tax second homes to fund pothole repairs" or whatever and yet this generates panicked responses like "This is basically Stalin's great purge turned up to eleven" is... telling. It tells things.