>>34295877It suffers from the fact that Conkeldurr uses concrete pillars, rather than a steel girder. Same reason the line can't get Wood Hammer even though it absolutely makes sense considering Timburr.
There's a few other families that get shafted in similar ways, simply because of moves not making sense on the final evolutionary stage.
Yet at the same time, we do get weird shit like Clamp Huntail or Harden Butterfree because of their prevos learning specific moves that don't exactly match the later evolutionary lines. Or even weirder we get Pokemon like Wooper learning Ice Punch as an Egg Move, only so that Quagsire can have access to it.
...So there's definitely precedent for Conkeldurr being "allowed" to use Wood Hammer and Steel-type moves...