If a study comes out saying meat is great, "keto" sites promote it.
If a study comes out saying plants are great, "plant" sites promote it.
I don't think a site called 'plantbasednews' is hiding their bias.
Even Trump says something correct about the border every once in a while, but you'd be a fool to take him at face value.
By contrast a more neutral source that lacked said motivation could be taken more at face value. By putting your agenda out in front, you're implying that you prioritize that agenda over everything else, including most likely the actual truth, because agendas become less and less politically attractive the more nuance they try to convey.
This is a site to report 'plant based news', reporting on a study about 'plants'.
The site does not label itself as : "Completely un-biased news site weighing the thousands of studies dealing with all food types and providing equal 50-50 coverage of both plants and meat studies so people on the internet don't cry about bias".
We all eat plants. Even lots of plants. But most of us are not vegan.
So if these people are vegan and pushing a vegan agenda ... I wish they'd make it more clear than "plant based."
Incidentally, kimchi is easy to make, delicious, and healthy. AND most kimchi recipes are not vegan - they include one or two fishy ingredients.
There is just as strong an ideology and religious fervor around 'carnivore', and 'keto' communities.
Then when someone suggests eating some plants, they yell 'vegan'. And the more someone in the middle tries to argue 'no, really, you need some fiber', the more they yell back 'your vegan'.
If the person in the middle starts arguing back, and siting studies, the extreme side starts viewing them as extreme, even if they are in the middle.
Think the effect is called Overton Window.
I would hope no vegan would argue against Kimchi. Kimchi is great.