Is there such a thing as long flu? Long cold? In a way, don't most illnesses cause long term effects?
Personal experience aside, it will be important to put specific numbers on the phenomenon and establish a baseline for comparison to other illnesses. So this announcement of a research effort is good news. I just hope they will put the numbers in context.
To amplify your point, I didn't know this until my father died last month from a series of heart attacks brought on by pneumonia, which itself was caused by COVID.
Side note: the cause of death is listed as a heart attack. How many deaths are we not counting because COVID was not the direct cause?