I do see your point but I see it another way.
We have not lost but gained, not punished but rewarded.
I think the 40 upfront attacks is generous compared to the 57 staged attacks. The top players are still getting into triple figure stages. The number of diamond trophies seem to have increased (just my opinion, no hard stats). It took me 2 cycles of boosts to reach diamond (6 hours of boost) so I am getting more power powder for less effort and expenditure.
I would also suggest that the vast majority of players never got 57 attacks anyway so they have no/less loss. As I said those players that were getting 57 attacks are still reaching the heights but in a much more life friendly way. 57 is just a theoretical number, 40 is hard and fast.
We are not being punished or missing out, there is no real loss only gain.
How far can we get in 40 fails, that’s it. If monthly mega crab was released in this format originally then we would not think twice about it.
If we are wishing for more then that is a good thing but would we still want more if we got 57 fails? I didn’t use all my fails, if the number was higher then where is the tension?