Rebase and merge does not seem to work with stacks when disabled per repository

[stepancheg]

We have per-repository setting to disable "merge" and "rebase and merge", only have "squash and merge", because some people don't know or don't care about squashes — our only option is "squash and merge".

I suspect this is the reason why I cannot land the stack all at once, like in this nice picture

So landing a stack of 20 PRs is tedious process with clicking "merge" button once every 20 minutes.

(the button is even not available, but I created a separate thread for that).

Am I correct in understanding the cause? And if I am correct, can you please consider adding an option like "squash and merge each PR in the stack".