And there you have it. We're working off of suspicion, personal experiences from decades ago, hearsay, general anecdotes, and "common knowledge". And common knowledge is whatever feminist propaganda has been saying.
As the saying goes, "the plural of anecdote is not data." Actual data is hard to come by, and the common knowledge numbers/stats on everything from the prevalence of rape to the gender wage gap are all bogus and long thoroughly discredited, and yet they still make the rounds.
Ask men and boys if they have issues on a survey, they will say "no", because they have been taught their whole lives that they don't. They have been told not to complain, and know from experience that no one will listen, even if they do.
But when asked about actual symptoms of problems, actions taken, and so on, the picture is very different. Men and boys have just as many or more problems as women and girls. And more serious problems. And the statistics for things like suicide back that up (75-80% male in places like the US and UK).
But no one cares. Because "everybody knows" that men are rapists, child molesters, murders, and general monsters. And "everybody knows" that women are perfectly innocent victims of all of society's issues. Except that what "everybody knows" is complete horseshit.
The term "[rad-fem hate-speed redacted]" is used as part of that feminist propaganda to demonize men. Some may use it innocently to describe what they think is bad behavior more common in men, but that doesn't negate the harm that term contributes to. Language is power. Use their terminology at your own risk.