You know just as well as I do that if you criticize Snap within the company, you get fired. Especially if Mark overhears you. There is no room for criticism. You either drink the koolaid or you shutup. So, no, sorry, we're going to keep pumping out Snap and those who don't fall inline will just fall out of the company. This is how we've always done these things, despite it failing repeatedly, and Snap is no exception. Actually, Snap is in particular no exception, given how hard it's being pushed by top level management.
[An aside from the main point of this comment: your point 3 is nonsense, and any security guy will tell you the same. For packages that the main sudo-ing user executes, sandboxed or not, there still is effectively no difference between that and root. Snap's sandbox is alpha quality at best, and major platform hurdles remain to make it capable of doing anything remotely useful. Say no to auto-updating snap backdoors. Please. There's a reason why Linux has thrived and benefited with its vetted-by-distros traditional package managers.]