Vanilla + Wither = NOPE NOPE NOPE NOPE NOPE!Apparently vanilla minecraft has fully automatic mining now.
A bit slow but then again it also doesn't need power and you don't need to set it up multiple times.
The real downside lays in the fact that it requires a wither but then again you can probably use said wither for other things as well.
But if we had just one way to break blocks, even if it was a block with would break the block on top of it, and spit it somewhere in a 10 block radius, that would make automating everything in vanilla possible