This is a major change to the way block metadata is handled within the PM core. This separates variant metadata (which really ought to be part of the ID) from state metadata, and in a couple of cases flattens separate states of blocks together.
The result of this is that invalid variants can be much more easily detected, and additionally state handling is much cleaner since meta is only needed at the serialize layer instead of throughout the code.
The function name is a little long-winded, but that can always be refactored later if needed. This provides a way for blocks requiring specific tools to override drops with non-standard stuff without needing to worry about what tool type was used.
It's also possible that passing the Item used here is actually entirely redundant, but again that can be fixed later.
This name better describes it. "can be broken with" implies that items which this returns false for cannot destroy the block at all, which is incorrect. What this actually returns is whether the item is the best tool to use to break the block.
