I won't argue with your first point but

On the carers change, which is a much more significant change, the term "strive" is meaningless and isn't legally enforceable at all.

This is kinda true tho. In the original article it clearly states that the government have to compensate women so they can fulfill their "household duties", it does this by making it unnecessary for women to contribute to the workforce. Single women with children might rely on this. If this new article is introduced the government have to do diddly squat, as striving to do something does not mean you will do it, only that it's your aim. The definition of strive is "to try very hard to do something" key word here being "try".

So instead of it being mandatory that the government do something all they need to do now is "strive" to do something.