Spit and Hammer Slam both deal over 1500 damage at level 10. And he never specifically stated the amount of damage poisoned blood deals, he only gave situations in which it would kill you.
Yes, but spit deals it over time, so it just makes it easier to gank on Poison Blood. Hammer Slam is the only skill in the game that can prevent somebody from ganking themself on Poisoned Blood. And assuming that somebody is going to grind himself under 600 to gank himself is getting the numbers wrong; that just won't happen at level 5 if he has any armor, (and nobody does like 700 damage with long range skills at level 5), and at level 10 it's 1500 health, way away from 600.
Personally I always drink an Erebus potion after I kill him so that I don't forget about it, fuck up and get low on health, then drink it and give my enemy a free kill.
Good strategy, though unless you are leaving the lane then it's still a bit of an advantage because you can more easily be pushed out by another Demigod. While it does prevent the exploit, there are still quite a few situations drinking it isn't the smartest idea.
Pathfinding is a rather major bug that should be fixed ASAP. The patch has only seemed to make it worse.
Well, I meant more along the lines of exploit bugs; we all know pathfinding and the AI are shit, but those have been at the top of our priority list so long it should probably go without saying. Still, I would rather have good pathfinding than this exploit fixed.