I mean, that never fails. Sometimes it's worse than other times, though, with especially high-skill-cap champs.
Notably, Bard. Who, while at release was seemingly a universal reaction of, "how the hell does this guy even work", is still my favorite support and I've completely 180'd my opinion on him, after having better learned his capabilities. He's still got a bad reputation because of that super-high learning curve, with which I sympathize completely, but that doesn't mean they don't trust you if you pick Bard, no matter how competent you may be with him. A couple of ADCs have literally refused my Bard choice and chosen not to play and give up almost immediately, if not then and there, or dodge champ select. I mean, I get it, one missed ult at the key moment is gonna screw everyone's game up. Or win it, once you get the basic reflexes of when and how to use it. But I digress.
Having said that...Frick, man, at least make people rank two (this is not asking much, seriously, one good game with a champ is worth about 3/4 of that bar) with a champ before using them in ranked. The Kindred ban is a disastrous waste, and everyone knows it's not because of power, it's because of the people who pick her to test her out, and see absolutely nothing wrong with that statement.
Then there's the people who play ranked, and they say they "haven't played in years" and then they play LeBlanc and ask why her silence isn't working. That actually happened, which is like, I don't even think I started playing before that happened. Or, like, they do Elise with a rushed (not even delayed, just flat-out rushed for like a 65 HP boost) Cinderhulk build that just blows your mind. Which also happened today and made me crazy, because they had a (surprisingly good) Pantheon jungle who can easily level 2 gank everyone.
Kinda went off-topic there, but...Ranked is a weird place. I'm not sure I can afford to take it seriously anymore for my own mental state, because I get things like Cinderhulk Elise, or someone playing LeBlanc for the first time literally in years, and jumps right into Ranked like it's nothing. Or the people who never, ever read patch notes, so any change puts them immediately on tilt. I didn't even know so many people didn't read patch notes until the juggernaut reworks, which threw at least one person totally off their game every single time.
Kindred is new, and people don't care that there's unranked, so they first-time play her in ranked without a care for anyone else. Hence, the justified ban, unless you're a first-pick jungler like me. Then again, I've seen lots of people pick her as an adc and flat-out argue with me that she's not a jungler, but an adc...So, yeah, I get it.