While I do think that this is a very real problem that should be addressed somehow, I think Tim Berners-Lee should stop making useless statements to capitalize on being "the inventor of the Internet". It just feels more and more like a celebrity chiming in an issue to get public appraisal and I think it just adds noise for the people actually working on the problem.
By unambiguously taking this side of a highly partisan political issue, I fear TBL has lost a lot of credibility in the eyes of many of the people he needs to fix the actual problems that have befallen the web.
I don't read anything in the article which I would consider political, or taking a "side" other than admitting the issues mentioned exist. Nowhere is any specific political party or ideology mentioned or blamed.
I don't know why TBL would lose credibility, or what he would lose credibility in, specifically.
What is your own view? Do you you think TBL is wrong and women do not face widespread harassment on the web?
Public spheres of all sorts have long not worked that well for women and girls.