It is sad that he made these comments – there is no need. You can criticise a match official without having to bring their gender into it – that is completely irrelevant. She has earned the right to officiate at that level by doing all the qualifications.
A couple of years ago Ron Atkinson wasforced to resign after making racist comments in the wake of Chelsea’s Champions League game against Monaco in April 2004. While I am not keen on people being sacked I do think that we should treat sexism in a similar way to racism.