My personal opinion on combusken is that it has altered the way people think when they build a team. When something affects team building this much, it is a problem. A whole stop to baton pass is something with prankster and encore/taunt. Since NU literally has one pokemon with this, Liepard, it's frail as shit and cannot reliably switch in on busken before the baton pass for the risk of getting bopped by a flare blitz, brick break or anything of the sort. Yes there are counters such as poliwrath or priority users etc, but busken sets up on a lot in the tier. There is a lot to be analysed here also, since busken has an amazing typing, it can set up on things in the tier defensively and offensively such as shiftry or vileplume for example. With this, I've also noticed that I've had to alter the things in my team which i build around. I feel the need to have something imy team with a powerful flying stab move to hit anything that busken boosts to or busken itself. It's literally the only way I deal with it and with that, it can't switch in safely. Now with screens support, even then, my tactic is risky and 50/50 at best and it appears to beat a lot of the tier with little effort required.
For I don't think Busken is broken itself, it's the baton passing of boosts to things like Kanga, Feraligator, Xatu with stored power and anything bulky that can take a hit on switch in. It's a machine that can take almost any hit thrown at it with a good player behind the wheel and it's something that is simple. And if there is anyone who has played the ladder doesn't enjoy playing because busken pass is so common. With that, if people don't enjoy playing because an idea or concept is so cheap, it surely does send a message to people that this pokemon needs to go? Without the facts and performance, if you're having to constantly build around this threat and idea that is so hartcounter because of how fast it is and how powerful it is when it sets up boosts, it's almost game over. Not to mention the variety of sets it can run, it's stupid.
In my personal opinion, it just ruins the meta, if people are going to the top of the ladder because they are abusing a cheap tactic then it suggests that it is far superior to most playstyles and most ideas on the ladder. Hence it should go and I'm sure most of you agree with me since it has too much variety, bulk, speed and power once it sets up boosts.
Bare in mind I have written this at 4am and I am tired so my wording is rather bad, but you get the point haha.