Just know the law in Taipei city says no, it is NOT legal to stay at an Airbnb for quarantine. That’s all.
You think you found a loophole, be careful, be respectful, wear masks at all times.
Call it hotel lobby against Airbnb, but there are reasons why the ban is supported. Basically, lack of safety features, scams, etc. There is already enough trouble with normal rentals. At least the hotel industry is better regulated and has insurance.