It is not new but COVID-19 appears to have a higher rate of this complication compared to H1N1, flu, etc. Early days with limited studies but data is alarming.
It's difficult to hit the sweet spot in messaging. Some will panic unnecessarily so sometimes you have to tamp it down to get the understanding more in line with reality. Other times people downplay the real threat so the message has to have more emphasis on the risks without seeming alarmist or getting out of control in the other direction.
With so many polarized regarding this virus already the messaging is even more difficult to get right and many will discard anything that does not already fit into their pre-made narrow little compartment.
I would encourage everyone from every point on the spectrum to look at the scientific/medical information with an open mind ,without prejudice regarding the veracity of information, and without prejudging the intent of the speaker/author.
For the record, making a video is not the same as releasing a peer-reviewed study in a journal that is then scrutinized widely by the best minds in the field. Some voices are more credible than others so carry more/less weight as a result. And we should never allow our own biases to drive our understanding of science.
The medical issues influencing any return to play (or not) decisions should be viewed through the understanding that this is a new virus, the effects of which cannot be fully known. There are growing bodies of evidence and still many remaining questions.
Also, college sports do not operate in a bubble. Even if that were possible, those types of bubbles are not airtight. College sports do not operate in a vacuum. There is a bidirectional influence with society at large with movement along many avenues.
Yes, litigation is a concern but so is the perception of the public at large and of the athletes/families. Balancing these decisions based on the competing interests of the involved parties is a high wire act with no net - make the wrong move and there may be dire consequences for all involved. The decision makers are motivated to try to make it all work, but being risk averse is an unfortunate necessity.