That applies to the private leg of the Corporatist State media apparatus. Things like the CNN or Fox. They're propaganda in one way or another because that's "the deal" in a Corporate State regime. Private ownership is tolerated and rewarded with wealth beyond what would be possible in a free market, as long as you play along and spread and uphold the mandated ideology. Pointing out that those outlets are propaganda is nothing new or clever.

What about things like RT and Sputnik, or Al-Jazeera, for example?

These are full-on State propaganda organs, like LITERALLY State-funded, State-owned and State-directed propaganda. And not only they don't acknowledge this obvious fact, but for some reason independent/alternative media in the West insist on presenting them as independent/alternative media sources. Which they never do with Western exact equivalents of those two outlets, such as the BBC.