Indeed, source very much still matters. "It's difficult to get a man to understand something when his salary depends on his not understanding it."
"Qui bono," who benefits, is a great question to ask about the organization and the story when reading it, especially when combined with Hanlon's Razor. Tend not to attribute to malice that which can be adequately explained by stupidity. And when malice is reasonable, then make sure to ask Who Benefits from the malice. If that's difficult to determine or the benefit seems small in comparison to likelihood of human stupidity, assume human stupidity.
Is the organization historically trustworthy? (MSNBC and Fox News, when not being talking heads and not talking about the current culture war buzzwords, tend to do good reporting.) If the story is wrong, is it reasonable to assume it's because someone somewhere misread something, mistyped something, misstated something, or otherwise made a mistake? (Perhaps the story breaking or otherwise too recent for slow, quality research. Perhaps the reporter, while trained in research, is not expert enough to come to the correct conclusions of their research, or is not researching or can't find nonexistent peer criticism to the research, both big problems in science reporting, especially when the reporting is of initial findings that haven't been peer reviewed.) If the story is not accidentally wrong through human stupidity, then qui bono, who benefits from malice? (Does it present a politician as unhinged or out of control? Does it ? And especially, would the story impact wealth, either to hurt it or protect it?) Sources like PBS, which (while they are NOT immune) are impacted far less by click-through ad rates and through funding partially derived from donations and public funding have less incentive to push narratives that benefit particular monied and/or political interests, or foreign sources like BBC or AJ don't get as much benefit when it comes to stories about US events that don't tie directly back to their organizational/political benefits. (When these are NOT the case, of course, then malice become far more easy to assume for these sources!)
So is it more likely that Governor Whitmer targeted gardening supply stores during the early pandemic because she was testing/pushing the limits of government power to limit the freedom of citizens to go where they wished or to expand government's economic control over the American marketplace, or is it more likely that there was political power to be derived from presenting the image of the governor as petty, tyrranical, and nonsensical? Or is it more likely that everything, both the initial EO's presentation, the angry response to it, and the fact-checking of the response, were victims of our human foibles?
Personally, I think it's far more likely a mix of human stupidity in writing the EO in a way where it was easy to misread the EO as specifically targeting gardening stores, combined with a malice decision to push hard on what was probably originally a misreading because it presented a view of the governor that worked to politically tear down her trustworthiness as she was taking actions that were having an economic impact on monied interests in the state (the EO essentially tried to turn big box stores into grocery-only stores to limit gathering, which during the Fog of War of the early pandemic was a reasonable health goal even if years of hindsight have given us a far better view of how impactful that actually was or not). Plus some stupidity on pushing back far too hard on the fact-checking response to give the impression that the EO didn't even mention gardening (it completely did, very clearly, in the list of attempts to pre-empt loopholes to the EO's attempt to limit the uses of large stores in order to minimize the reasons for people to gather in them to limit crowd sizes). Also, the Facebook/Twitter viral news sources get their money from clicks, so their stories tend to be far more about pathos than ethos or logos and truth is all-too-often a casuality for them.
I'm sorry about the length of my thoughts here. Bevity is the soul of wit, and I'm a rather witless man.