I'm glad they said what they were thinking. Finally, something unmanaged and open - supporting something they feel genuinely associated with without worrying about what people say. A lot of these players will have been in very similar positions. They also probably know Mendy and his personality on a much deeper level than we do and perhaps can't believe he's been accused of this.
None of us know what it's like to be such a high profile person, especially someone so wealthy and often vilified as being flashy, thick, arrogant dickheads. I can only imagine the amount of false accusations and money-grabbing people around them.
Adding to this, women and men display aggression in different ways. Women tend to do it by spreading gossip and reputation destruction. Men tend to manifest by resorting to violence. It's very easy for a woman to ruin a man's reputation by an accusation of rape. Boom, their whole life is over. It stays on his record forever. That blemish never goes away and some people will always say "he's a rapist." But what about if he's actually innocent? How is that even fair?
Maybe he raped them, maybe he didn't. We've no idea. But, Mendy has been deemed to be innocent by the law, he should be able to resume his career and continue as normal.
