It might be silly without evidence. The threshold for silliness would become a lot lower if there were a history of systemic problems and extensive evidence of similar scenarios in the present.
> So if in another company a man discriminated against a woman, it increases the probability that the same thing is happening to the OP?
This is clearly not what anyone here is saying you should really take a moment to reevaluate your position. We're not talking about one man in one company but a historical and systemic suppression.
Additionally, you'll notice that the person you are responding to does not act or treat their colleagues differently, only that they consider where these noticed actions come from.