I Kinda have to agree but also Kinda Disagree?
Orianna is pretty damn strong and dying in lane for her will be difficult, BUT she does have some decisive Counters who can push her back, such being Zed and Ziggs, namely.
I Myself Main Zed and I have yet to lose my lanes vs any Orianna, with or without my roaming. Sure, she can hard pressure at lvl1 and 2 due to her zoning potential, and deny farm because of her Ball being such a threat, but her weakness is instant burst with escapes. Orianna's Ball doesn't instant move, so she will have a lot of issues with Mobile enemies who can also deal a decent chunk of damage, and Zed is someone who does both in it's perfection.
Ziggs as far as I am Concerned possesses the stronger Siege Potential and Harrass Inlane, his Q's can chunk absurdly hard once you hit lvl 9 and got maybe half of your Morell done with boots, which actually is not that much AP to consider. His AoE ranges make it further difficult for Orianna because she Needs to position herself in order to possess the range for positioning her Ball, and Ziggs can deny her that Self-positioning with his W and his E, whilst harrassing her inlane with his Q and push Towers hard with his passive and his W Tower-execute.
Long Story short, Orianna is a threat, she is very strong, and she does not require an otherworldly skillcurve to Play. She is hard to master, but she is incredibly easy to pick up and make first steps with. However she has defined Counters, they are just not popular as of right now, but that does not make them non-existent.