I guess you should first get the facts - Bill C-19 has been introduced in the parliament which outlines these changes and yes it has to go through Legislative process - (refer ask Kubeir videos or any Immigration attorneys Tweets or even CIC news article). I am pasting link below of CIC news article.
its not program they are talking about creating categories in the EE system which is basically certain NOC specific groups to be created under EE system, to make such changes it has to be passed as law. that is why its amended under bill C-19, even there is parliament session video where it has been discussed after stage 1 seating done.
Canada planning major Express Entry changes | Canada Immigration News (cicnews.com)
I hope it clarifies your doubt.