Softstart is often good design though and shouldn't be too hard anymore.

How many circuits cannot afford 100us of softstart?

I guess to your point though: 100uF of capacitance (because of a lot of 10uF caps) to 3.3V requires a 3.3Amp softstart over those 100us startup time. So you still can't go crazy spammy.

While 100x 100 nF caps is only 10uF all together.