I don't miss bot lane coin flip but...
I do miss seeing supports actually try during laning phase.
I've really noticed recently that a lot of supports are hyper aggressive, it's an all or nothing during laning for them. It's not calculated aggression either, it's just brainless all ins that may or may not have a good chance of success.
If they win said all ins, it might snowball from there, and if they lose, the enemy bot lane is potentially fed. That isn't the supports problem though. It's unfortunate for the poor soul that was bot lane with them, but there's 3 out of 5 other players on the team for the support to gravitate towards. The support picks whoever is the strongest out of everyone on the team, throws their shields, heals and other buffs at them while also trying to secure kills for them with cc, and goes from there.
Due to supports operating off low gold in-come, and their kits already being valuable to begin with, there is no penalty in this situation for them unless of course that there's no one on their team for them to piggie back off of or the enemy team is simply too strong. Overall, the odds for having someone decent on your team to throw your buffs at and secure kills for are pretty good, so there's not a whole lot of risk to being all or nothing in lane.