Where, exactly, is the line? That is a very difficult question.
I do see where you're coming from Kevin, and it's not an easy dilemma. I have seen a couple of the lauded member dealers here do some things that weren't necessarily what I'd call ethical. Bad decisions happen, despite our best judgement. Yet they're still here. I think I know what you're getting at wrt SHOT and BLADE shows as well (QTRMSTR anyone?).
I think the primary difference here is that this dealer in question primarily exists to manufacture and sell clones, and there is ZERO question in that if a person even takes a quick glance at their site. They don't exist to support the community or to further the art/technology. They're literally only around to make a quick buck. They're sold directly out of China, by the slow boat, and based on their 60-day return policy (which appears begin when an item is shipped, so by the time it is received, you have little time to do anything about a problem), they don't seem to care one iota about customer service either.
I do realize that no knife company or dealer exists to not make money. For me, it comes down to ethics/morals/integrity. I will do business with people/companies that try to do/be "good", versus a place I know might not. I do not think Topomart is good for our hobby, at all. They drag the whole industry down by de-valuing the hard work that so many people put into this industry when they copy literally everything they can, and sell it so cheaply by subsidizing the manufacture with Chinese government money and near slave labor. I think any association with them is "bad for business", and I think a lot of members here agree with that. Which is why so many of us were shocked when they didn't get the boot immediately. I, for one, thought you would boot them just out of principle. It's your site, you could have just told them to piss off because you don't like them, no further reason needed (at least that's how we all thought it would be).
Back to that line, and where to draw it. I don't know. I can't put a number on it. Does a company making 99.99999% of their money through producing/selling blatant clones and counterfeits get the boot? If it were me, hell yes they would! What about 49%? 51%? 10%??? For me, it would be much, MUCH lower. More like less than 1%. And yeah, I think that if I knew more than I do about what goes on behind closed doors, that would likely severely limit where I buy knives from, and from what manufacturer. That's the gray area, where it would be difficult to make a decision when you have serious skin in the game (like you do).
So, where the line exists for BF is your call, obviously. I think everyone was just surprised at where it was drawn, expected otherwise, and are a bit disappointed. We assumed (yep, that word) that the hard stance against clones here meant that a manufacturer/dealer which existed nearly solely for making/selling clones would not be tolerated here in any way, shape, or form. We were apparently wrong, and we clearly didn't have all the information.
That being said (yeah, I know), Topomart seems to be a pretty blatant, unapologetic cloner. Many of us were shocked to see them not getting the boot ASAP, and people started speculating. When that happens, you always get a few that will start to think the worst, and put their foot in their mouth in the process. Try not to take it too personally. While I don't personally agree with the decision to allow Topomart to stay, it's not my decision to make, and I'll have to live with it whether I like it or not.
We'll get through this. FUCK 2020!