After reading so so so many help post i have a strange question, why the hell did we go back to 252Hp on any set ever? Even hp is bad on almost everything baring weird berry sets and belly drum. Even [i know is ou] fabel wants odd hp so superfang if ever run doesnt hurt as much, so why did we go back to 252hp spreads?
That's false. In the Clefable example (or Reuniclus since this is UU), Super Fang is incredibly rare, while Recover/Softboiled will heal one more HP per use with 252 HP versus 248 HP.
Even outside of Magic Guard Pokemon, if you expect to click a recovery move more times than you expect to switch into rocks, the even HP is going to be a (very slight) advantage.
(But the difference is so minuscule that it hardly matters either way...)