All decks try to win, regardless if you want to call them rush, grow, stall, bunny or peter. Its a bad strategy in a real match as you are relying on too many things just to get some mediocre effect out of the combo. Thats all there is to it.
All decks try to win, true.
All opponents are equal, false.
Rush deck against hb --> suicide
stall --> win
Just because its slow, doesnt mean it can stall. It means it NEEDS effective stall to work. Which means more cards in the deck and more bad draws. And reward for setting up the combo is simply not worth it.
2 Bonewall counters for 2
quanta each turn, is the only "stall" you get, if by some miracle your opponent cant kill your 1|1 creature. And those two counters are quite laughable at the point of the match where you managed to draw and play all those cards.
Seriously, try fractaling Balls of Lightning with that same combo and see results. BoLs are definitely faster than this, and more reliable, and its STILL just a mediocre, not very competitive, deck.
If cards that benefit from death effects are in some way improved, or if Zanz comes up with new ones, then it may give some extra value to this card. As is, I see it being used mostly in "fun" decks.
Then again, this card may have some non-obvious perks we dont see yet without testing it.