It would be irresponsible from our side and it would represent a conflict of interest if a stake distribution service downvotes posts that received bidbot votes... and since most of the posts trending are usually there thanks to other voting services, the management of deserves and what doesn't deserve to be on the trending page is up to the community

I would disagree with this. It is the responsibility of every stakeholder and by extension those to whom stakeholders have entrusted their voting power in the form of delegation, to see that the reward pool is used in a value-contributing manner and to take action with downvotes when it it is not, at the risk of seeing Steem fail. When large portions of the reward pool are allocated by bots/services, then those become just a subject to scrutiny and downvotes as anything else, in fact more so. It is not a conflict of interest to act against irresponsible usage, it is directly in the core interest of every Steemian to see that the reward pool is used well. And to be clear I believe that bidbots and other voting services are themselves perfectly fine, but like every tool they can be abused, and it is the responsibility of those with downvote power to step up and make sure that does not happen.

That being said, as long as the downvoting power is used for something useful, and voting circles are a perfectly fine case, then I don't see an actual problem. Not everyone can address every bit of abuse with limited downvotes.

But if and when we come to a time that all voting circles have been broken up and are no longer a problem (and hopefully this happens), yet hypothetically bidbots/services are still paying out large amounts far in access of value (particularly once the current excitement over downvoting bidbot abuse wears off a bit and participation in policing it may wane), then it won't be responsible for anyone with a large voting power to ignore this.