Look at how the proposal for making netplan the default network manager in Debian went. Not good, from Canonical's perspective.
Making /tmp behave the way systemd guys want also went not according to plan. The behavior is modified somewhat because of the discussion.
Rust's influence doesn't come from Canonical per se, but from its promise to eradicate memory related bugs. The initial hype was off the charts, but it's coming down, and the shortcomings are becoming obvious.
Canonical is trying to affect Debian, that's true, but it's not always a given.
Pipewire is working great.
So when it isn't going into the right direction that we care, maybe more people with other mindset should join.
It is like complaining about who wins elections without bothering to cast a valid vote.