The industry recovery is a moving target. The second COVID wave had them scraping their original plan, and from what I’m hearing plans going forward are changing on an almost daily basis.
Outward signs are pointing to parking more 145s than 175s that will be eventually brought out of storage and delivered from the factory.
Mind you, that 4-500 was just my prediction.
Unlike Kooj, I’m willing to admit when I’m wrong.