There are many Bitcoin people here (because hey, this IS a Bitcoin WO thread) that have disagreements and legitimate concerns about the future of Bitcoin: Joe public adoption worries, merchant adoption worries, SegWit adoption worries, scaling worries, worries about how LN will work, worries about the power/centralization of the miners, etc. I think on some level that all of us share these concerns to some degree. And there is nothing wrong about revisiting these debates from time to time as long as it is honest and agnostic discussion.
But the thing that separates these people from the true Bitcoin trolls and alt shills is the fact that they are still pro-Bitcoin. They WANT Bitcoin to succeed and thrive long term. They have no hidden anti-Bitcoin agenda, or trying to covertly shill for an altcoin (BCH). They don't spend every moment with every post spewing anti-Bitcoin propaganda, or slyly trying to strike up a supposedly "agnostic" debate or concern, only to have their real hidden agenda slowly revealed through the way that they are debating (i.e. breadcrumbing, straw-manning, playing dumb, rebuttal of every single point, ignoring valid counter-points, supposedly have the 'real inside knowledge', leading with the sympathy/empathy card, etc.).
No common ground is ever found with a troll/shill, because they're not looking to find common ground. They are not looking to have some honest debate. They are trying to disrupt and create an emotional reaction, that is all. And in this forum's case, they are looking to disrupt and dissuade belief in Bitcoin's long term dominance and viability. In fact, they are part of a large scale campaign to do so, and it is reasonable to assume that some of them are getting paid for their effort.
The thing that the trolls apparently don't get is we are all too familiar with all of their stupid tactics. The art of internet trolling is well documented and has been around for some time. So they are pretty easy to spot.
https://www.reddit.com/r/conspiracy/comments/5wslia/internet_troll_tactics/Some of you guys can engage with the trolls all you want, the rest of us will just put them on /ignore. But please stop trying to 'defend' them and their actions. And if you are so blind that you can't see that they only show up when Bitcoin is falling and BCash is getting pumped, then you need to seek help.