A lot of people are misunderstanding GMB.
Marriage is a legal contract. One in which a bad actor can take advantage of e.g. blac Chyna, the people from the 90 day fiancee extended universe, countless NBA and NFL ex wives etc. Men are often targets of financial and emotional abuse, but because our society assumes men have limitless privilege and are predatory, there is no sympathy for these men in the same way there is for women who are taken advantage of.
You can have a long fulfilling relationship and raise children without ever getting the courts involved through marriage. Again, marriage is a LEGAL arrangement. Men who are clowned/sympathized with through the GMB tag are men who didnt take it slow enough and get to know the woman they were with. They allowed themselves to be pressured into marriage or otherwise bought into the fantasy that it is something you need to do to be a complete and happy human being.
Women and men fall into all sorts of traps because they look at another person as "what can I get out of them?" Whether its men who desire sex and basically a maid and a cook who will never question them or constructively criticize them or voice their pain. Or women who want a tall baller who she can impress her friends and family with by constantly bringing up his status and looks, and garner countless social media props and overall attention.
That selfish motivation is what leads into disaster.