They could still let people pre-order a digital download of just the album without extras.
My point is, by having a pack with all these extras as the first (I.E. the lowest priced reward) it excludes a lot of people from contributing, the people who don't want stuff like stems, and less people contributing means less money.
And before you make the argument "even if less people contribute this package costs more so it evens out" no it does not, because they could have both at the same time. I know that they don't have to do exactly what other bands do just because that's what other bands do, but there's a very logical reason as to why this is a bad plan - the goal is to make money, and in its current state, it is not designed to make as much money as possible.