If the airline is offering to cover lodging then you shouldn’t be able to seek reimbursement from your credit card. Hopefully these new customer commitments do not lead to a bunch of denied credit card reimbursement claims, effectively limiting the benefit to weather-related events or at least going through the claims process with an airline before seeking reimbursement from your card (within the card coverage provider’s allowable timeframe).
Offering rooms when the airline is at fault isn’t new. Reimbursing rooms when the airline can’t get you one may be. However for those of us in the know on credit card trip delay coverage, these airline policy changes under threat by DOT may wind up being a real negative.