That thinking was applicable 10 years ago but has been unlikely to be successful since. Maybe for someone who has never had a CC before, but very unlikely for anyone who has had more than a few CCs. 10 years ago I (one player) was at 40/24 for 4-5 years running, including many AORs, it’s just not possible anymore.

Every issuer has tightened their approval criteria, every issuer has instituted specific anti-churning (anti-AOR) policies. Be it 7 years (AmEx), 5/24 (Chase), 2/3/4 (BOA), 1/24 (Barclays), basically never for some people for some issuers (Citi, Cap 1) , the issuers have made AORs unlikely to be successful.

Additionally, the downsides of AORs (other than declines), have become more severe (e.g. pop-up jail) rendering AORs even more detrimental.