What an elaborate thread. Is the point that Step and (say) Stride are being conflated by the OP, without considering the consequence of each? If one has a Land Speed of at least 10ft, one can Step 5ft into difficult terrain *without incurring an AoO* only by using Feather Step. If one has a Land Speed of at least 10ft one can Stride (say) 5ft (or more if speed exceeds 10ft) into difficult terrain *but will incur an AoO*. (This is my first post and I’m just beginning to learn PF2E) so please, please forgive me if this adds nothing to the discussion!)