Just had a realisation, Viktor is an idiot

So I was thinking about the scene where it's revealed to us that Viktor went back in time and saves Jayce as a kid giving him the Hex gem that got him invested in Hex Tech. If Viktor never did that (even if he saved him and didn't give him the gem) then he wouldn't have caused Jayce to get invested, make Hex Tech, cause his past self to rely on it to 'cure him' and make Viktor turn insane. Let alone all the stuff with Vi and Jinx (but I can excuse that with him just not caring about those two) I feel like Viktor would've been smarter than to do that, especially being in the position he was to know how it ended. It just feels... Idk odd?