I think the current (quite absurd) situation is a function of three factors: 1) how easily people get offended these days, 2) how easily accusations can spread

I think the current (quite absurd) situation is a function of three factors: 1) how easily people get offended these days, 2) how easily accusations can spread thanks to network effects, e.g. on Twitter, 3) how much damage can be done by people fixed on causing you maximum damage legally, e.g. calling your employer etc.