Another counterpoint: hotel quality has arguably improved a great lot in the last 10 year or so. Especially, after Covid. That's rather perplexing, especially since airlines are going in the opposite direction while they two are usually a part of the same purchase by the same people and logically i'd expect their trajectories to be similar.
Bigger counterpoint: cars. 10-year old electric cars today drive like new because well, there's nothing to wear out there. Our kids will see lots of 40-50 year old cars on roads, with completely worn out interiors but still driving just fine. Probably with batteries replaced once or twice thus driving a lot better than when they were new because 2035 batteries will have a lot higher density, C-ratings, and will heat less than 2015 batteries, and replacement will cost less than replacement of a gearbox on a 2015 Volvo goofed up by incompetent servicemen.