There's trash talk but not at that level, because Riot would hand out fines for vulgarity like free candy. So if you want trash talk like that, it'll never happen in a Riot based/sponsored event, you'll need to watch another eSport
I've seen clips from CSGO majors where they're side by side, and I think his name is Apex, is screaming at the other team. Always seems to add more entertainment to somewhat boring stages.