I feel like I know what he means. I don't necessarily need to carry. In fact, if I am carrying, something is terribly wrong, because it means not only is my entire team incompetent or incapable of closing kills, the enemy is losing and behind or neck and neck with support, resource-wise, which means it was probably a win anyway, regardless of who carried. The problem is feeling rewarded or like you are making an impact on the game. If I have a good team of players, it's all good. Plays are made, I feel like I'm contributing. But most times, you can do absolutely everything right as a support and still lose, hard, and regularly due to nothing you can control. If you are a solo lane carry, and your team is losing, you have a fair chance of turning it around. If you are doing well as a support, and your team is losing, it's more than likely still gg, because you don't have the damage rotation, and your severely under on resources even under good circumstances. Let's say it's midgame, you started building sup items, but you are the mvp on the team. It's too late to start building damage, and vice versa; you are stomping in lane, you build damage to keep it going, then you get piled upon on bot, your tower is gone, lane phase is over, and your revenue comes to a grinding halt. There is just no solution despite the efforts of trying to improve quality of life or attempts to make carry supports. Pyke was a welcomed attempt, but he's better solo imho more often than not, and there are just other champs that do it better. I will say, when he does carry, he carries. Supports took a hard hit in s8 in so many ways you would think they were running the board.
I think the best way to improve sup life is aoe damage/dot. By the nature, the damage is padded so it doesn't burst and other lanes don't just abuse supports as solo lane mains. It benefits the team in fights and helps with clear/pve. Another way is designing champs that get bonus stats from sup stats, like old singed passive, so that sup items are even more gold efficient, but only for that champ. Another thought is, and pushing the envelope even further are champs that revolve around one big LEGENDARY item, with many tiers. Sups are essentially playing with 4 item slots instead of 6 like everyone else. This in itself is a glass ceiling. It would be enjoyable to have access to an end game item that may have a hefty price tag, but conserves space (similar to ornn items; maybe for all sups or just a specific champ). I could think of plenty more ideas, but this would be a good start.
And our favorite, 
