Why is it wrong though? And why/how are people special? You didn't provide any reasoning to either.
abfarid
The only problem with your image above is that the link to is broken. If you insert an existing URL from web, it will work.
Not sure why your uploads don't work though.
Do you mean you want to insert an inline image? To do that you need to use markdown embed, like so:

Exclamation point makes the image appear inline, instead of as a link.
I like how you completely ignored the part where I said "that doesn't matter" and argued the wrong point anyway.
Whether you consider them reputable or not doesn't matter. Those are THE organizations (some of them, anyway) that decide these things. They are THE experts in the field. If a person were to say "a lot of people/organizations say , so it must be true", that would be argumentum ad populum. But since they are saying "a lot of <authorities/experts in the field x> claim , so it must be true", that's not a fallacy, that's a valid appeal to authority.
CDC, WHO, NIH, etc. could all be wrong, they could've interpreted the "scientific evidence" incorrectly and come to the wrong conclusions. But we know that this is an unlikely scenario for so many independent experts in the field to reach a consensus on something that is wrong. Therefore, our best bet is to trust their conclusions.
To reiterate, whether those organizations are right or wrong doesn't matter, because they are not a random majority—they are the organizations you're supposed to rely on in this situation; it's a valid appeal to authority. Hence, it's not a fallacy, let alone argumentum ad populum.
And the organizations from the post must have their evidence for making their claims. Otherwise they wouldn't be considered reputable.
But that doesn't matter, because you still misused the fallacy.
But you did.
This isn’t an argumentum ad populum fallacy because the argument isn’t based solely on the number of people or organizations making the claim; it's based on the authority and credibility of these entities.
Whether you agree or disagree with those entities and question their credibility is a separate matter, but it's not argumentum ad populum. For the same reason the following isn't:
The Centers for Disease Control and Prevention, the World Health Organization, the American Cancer Society, the American Heart Association, and the National Institutes of Health all claim that smoking causes lung cancer and heart disease, so it must be true.
Long-ball Larry, is that you?
Right next to a huge pole*.
I'm just wondering how a car crashed into a pole sideways.

Here's the URL in your comment:
If you try to open it directly, you'll see an error, when you should be seeing an image.
I see a couple issues with it.
Firstly, URL contains an image proxy. Now, I'm not sure how exactly Lemmy works and if those are necessary, but my comments don't have those (on most clients you can use an option to see the raw comment text).
Secondly, that imgflip URL leads to a page and not to a direct image, which causes issues. If you link the direct image URL like so:
The result is:

Regarding the podcast you linked, I'm in no way associated with it, if that's what you thought. I'm just using an account on StarTrek.website Lemmy instance because I'm a fuckin' nerd. 🖖