Not really, he is doing what he needs to do so he/his party can remain in power for as long as possible & if he can destroy or at least permanently reduce the influence of the TU movement then it's drinks all round.
I don't see how reforming and modernising the trade union movement equates to destroy or permanently reduce.
Indeed if the movement reforms and modernises it would be much better placed to represent its members and even gain new ones, I would have thought.