No it's not. Did you read the entire article? YOU DON'T HAVE TO RECYCLE THE AIR.
Bring in FRESH OUTSIDE AIRinto the cabin. Then you will NOT be recycling pathogens which cannot be completely filtered out of the air.
And guess what? That won't make a difference - because you're still surrounded by hundreds of people in close quarters, with plenty of opportunities for microbes to be spread even by fresh air as it moves among the passengers. The recycled air ain't the problem.