see, this is just reflective of his blurry thinking around this.
any future government can repeal any legislation of this sort. the only actual way to stop it would be for the senate to block it, which would create a serious constitutional crisis - and would not actually happen.
so, on some level it's merely symbolic. but, it's actually deeply irresponsible, and it would really be better if he just didn't do it at all.
i don't even think these changes would survive a shift to a new liberal pmo, let alone a change in power.
https://www.huffingtonpost.ca/2018/12/15/justin-trudeau-to-block-future-pms-from-reversing-senate-reforms_a_23618918/