Timid 100 Base Spatk, 252 EVs, Life Orb attacker will still OHKO a standard CB Scizor with 60 BP Hidden power. Anything less will fall into a chance to miss the OHKO. Things that don't fully invest into offense, mixed attackers and walls might have issues, but anything even semi-offensives won't care.a nerf to hidden power Fire...
While it's a nerf, its impact on Scizor isn't going to allow it to switch into people with impunity.