I can't speak for COPD but I'm very familiar with a different chronic pulmonary disease (Cystic Fibrosis), and it seems to _strangely_ not be a huge risk factor for poor COVID outcomes.
No one really has a good story for why (and it may not hold) but it seems to be consistent with the idea that the most important variable is truly just age.
https://www.sciencedirect.com/science/article/pii/S156919932...
No one really has a good story for why (and it may not hold) but it seems to be consistent with the idea that the most important variable is truly just age.