Meh i never use them anyway. Having 1.4 M SED during Elite Guard Events and playing constantly to not let my Focus stay full allows me to kill all EGs i encounter up to the very end of Event solo with one-two full sed attacks (having alot of extra time in reserve, so i can even poke other people's SEGs) always getting x3 Points from them and ending up above position 500 in the final ranking - that's just fine for me. As for SEGs - i just poke mine and share and poke other people's SEGs to get SEG Elimination counts and get loot, or, sometimes, help my friends who are getting stick with their SEGs and can't finish them off in time and don't have any active "whales" to kill their SEGs at the given time or don't have them on their list at all. And "Whales" mostly prefer to get maximum EP from those SEGs, and are already powerful enough to deal with them without us halving their Inhibition with SexDrinks. Elixirs have no purpose since Multispawn is present - just poke someone else's SEG/EG and wait until it will get killed to be able to spawn another SEG/EG yourself just like as if you'd ward it off using Elixir.
I don't know - maybe some "Whales" that get SEGs of some insane level halve their Inhibition with Sexdrinks or ward them off with Elixirs, but i guess they can always buy them with gold if they need them that much, if they are buying so much of other stuff with it.