I don't think feminists realise how silly and petty they look to the world outside of feminism when they argue that Matt Walsh stole their ideas and they said it first.
Of course all movements start with small groups with focused interests who are paying attention to a phenomenon while generally other people are not. They push to share this concern because they want other people to notice and take action, and inevitably some organisation or personality breaks through and makes the issue real publically.
Also I don't think the Daily Wire gives a damn whether they were first or not, because they are the most successful, so the feminists look irrelevant even in their complaining.
Also I think Walsh's belief that on average boys and girls are different in their interests is more generally agreed with by the general public than the GC belief that it's just an oppressive social construct, so his approach was always going to be more appealing.
Even Matt Walsh would acknowledge that there are exceptions to the on average differences.
He admitted even he likes scented candles!