Why the anger towards BTV? It’s not the end-all-be-all trade reference, but it’s a good source that takes into account performance and salary, which teams do care about. Is it 100% accurate or 100% definitive? Absolutely not, for multiple reasons. Like it cannot tell you if certain teams like certain players. Heck at its core, it uses projections like Steamer and projections are often inaccurate.
But it’s a nice third party reality check. And when it says a trade is “Fair” that can be reported as fact, in that it is a fact that BTV said the trade was fair. No one is using as definitive. And that becomes apparent when people complain about it. To me, there is a huge difference between saying “BTV calls it an overpay” ( where I am reporting factual output from a neutral third party) vs saying “that trade is a huge overpay” (which could easily just be my opinion, supported or unsupported)…