I'm not sure about that. They have dignity.
There were some nights of the tour last year in which Aces High sounded good. Bruce still sings the difficult high songs live in their original key (ok, without Starblind, Montségur and Thin Line). There's nothing wrong with the songs towards the end of the set sounding a bit slower now, but some of the earlier ones were too... I think Nicko will be in better shape this year, last year was kind of a warm up after 2 years. As for Bruce, we already know, and tbh, I always knew. They also started playing Hallowed in its original studio tempo. The slower tempo is only really noticeable in the faster songs and I don' think Bruce is the reason. Imo, that's why Steve prefers to concentrate on touring now (as opposed to releasing more albums like the other old bands, although he has a plan for that too). Remember how they joked in 2003 (DOTR documentary) that they couldn't see themselves playing Run To The Hills in their 70s. And here we are now!