But it actually does change how you approach things. There really are several factors that change drastically in the difference between even +15s to +20s, let alone +15s to +25s or higher. Things that aren’t lethal at +15 become lethal, pulls you can afford to make at +15 become unaffordable/result in failure, etc.
I’ve said it before and I’ll say it again. Go ahead and cap off M+ to a few thresholds below the current progression. For the first two weeks of Heroic, cap off M+ below Heroic gear level. For the first two or three weeks of Mythic, cap off M+ below Mythic gear level.
Just don’t neuter M+ gear progression permanently out of some sort of awkward respect for raiders not wanting to do any more content than they need to do for raiding. I’ll quote it once again:
Nowhere in this does it read “you shouldn’t get gear incentives for M+”. It reads “do one form of content if you wish, just be aware that doing more than one form of content might result in a faster pace of gearing”.