MSNBC doens't generally run 'propaganda' for Pfizer, so much as they will avoid stories that make them look bad as they are big advertisers.
During a pandemic or war, the news system will close ranks and the stories come out differently but there are civil reasons for that.
And FYI I'm not denying propaganda exists, but it's of a very different nature that most of the bias in the press.
If all we had to deal with was state supported propaganda it would be frankly refreshing.
You seem to be talking about the general existence of media bias, for some reason.
Almost everything that someone posts is an anecdote, and you can't expect everyone to come armed with reams of well-researched facts.