I'd say a good majority of people don't really care what champions are defined as good competitive picks. I don't care or watch lcs or any competitive events mostly because they ruined that for me ages ago. It is a fact the community is fed up with reworks that are not logical and end up destroying a champion further. It is also a fact people are tired of them messing up the jungle every season. It is also a fact many people are sick of insert mobile X skill into new champion design.
I can't speak for the bards opness because I have only watched intro video too him but his kit is unique because it actually has risks involved, which most champions lack today. We'll see how op he is or if he isn't at all. I don't honestly care about bard I never wrote about bard. So, I honestly don't even know what the hell you are even talking about.
I stated the 3 champs you listed are mobile and I wish to further that and say they are currently a problem in league for a wide variety of reasons. Not just those champions many others. I'm all for people complaining and voicing their opinions on the state of the game. I'm voicing mine. This game has gotten increasingly worse and gone down hill over the past 3 years.
There were great introductions and poor introductions that lead to the current state. Complaining back in the day used to be limited to server stability 4-5 years ago and lack of achievements, icons, incentives to invest in rp. Never was it this bad and well that's what happens when you neglect your community and shit on all their ideals. Riot learnin' that the hard way. Any student who took marketing and economics could have seen this happening.