All of the above champions are completely obsolete with the release of champs like Zyra and Rengar. If you pick the above champions when these two are available, it means you don't care about the matchup and are just playing for fun. It means you're not trying your hardest, and are either trolling or aren't ready for a competitive environment.
If you've been paying attention to the tournament before it was postponed, none of these champs were picked because there are other champions that are simply better than them in every single way possible. If they were picked, then the team that they were on lost, likely completely due to the fact that these champs were on their team.
Therefore if you don't follow Riot's logic of only playing new champs for the first few weeks while they're OP then nerfing them after the sales go down, and keeping up with only buying what is guaranteed to make them a lot of money, you are gimping your team and deserve to be banned.
inb4 mass downvotes.