The article literally gives an example of her cousin (i.e. not a direct descendant of the current monarch) trying to get himself crowned; it's not like she had

The article literally gives an example of her cousin (i.e. not a direct descendant of the current monarch) trying to get himself crowned; it's not like she had to have kids in order for the monarchy to have an heir after her. Claiming that the reaction would have been less severe if she promised not to have kids seems pretty baseless.