It would have been nice if the article had described how contrails increase temperatures on the surface.
There seem to be a lot of competing effects, but clouds have generally been described as causing cooling on the surface by reflecting incoming solar radiation (sunlight) back into space without changing its wavelengths. Of course, they can also capture heat radiated from the earth's surface towards space and reradiate it back to the surface. We generally think of cloudy days as cooler than average and cloudy nights as warmer than average for those reasons.
Also, particulates in the stratosphere have been proposed to decrease global warming, but usually something like sulfuric acid, not carbon particles.
And, CO2 in the upper atmosphere has been modeled to decrease upper atmospheric temperatures, mostly due to CO2 migration there from the air below, not from jet contrails.
So, this article does not really do anything to explain how the net effect of contrails warms the planet's surface air. But, it needs to provide some explanation to attain credibility. With all of the doom-and-gloom biases in science reporting in the media these days, it needs to seem to make scientific sense to the lay person to have any effect on thinking in the general population.
And, including a "global warming" video that does not even mention the phenomena discussed in the article just makes it seem more likely to be propaganda than new scientific discovery.
If you want credibility, don't preach - do explain.