People have been making this comment for so long, with every anti-consumer change, and it's never been true.
Killing VPN usages didn't do it, canceling shows didn't do it, the splintering of offerings across multiple platforms didn't do it, killing password sharing didn't do it, raising prices didn't do it, including an advertising tier didn't do.
And this will not do it.
Hell, this is barely going to tweak the dial. The overwhelming majority of people don't watch Netflix on the desktop app, why should they fear kick back from the few that do? All they'll say is the mobile versions will still let you download (because those file systems are sealed away from the user).
Consumers will accept anything if there's no where else to get what they want. It's why the "free market" has no power in the tech space: consumers are so addicted to their chosen platforms, apps, devices, and services that they will accept literally anything before they entertain the idea of using anything else.
That's partially why enshitification is getting so bad: there's no punishment for it. Users will not move.