I wouldn’t go as far as saying it is “Toxic” it just tells the truth, I would say it fell short on details but maybe he just didn’t have time to write and explain or didn’t care to. Bottom line is its all there in the doc when it comes to very basic questions like these, with all do respect if the OP doesn’t know why the project is slowing down when multiple dynamic lights are enabled in the scene then that needs some serious remedy and thats fine just not reason to be upset about, its not like its a complex question about BP’s or a bug or shortcomings in an engine.
With that said yes the forums aren’t always very helpful and Epic most of the time doesn’t care to pitch in, they used to first year of UE release but now they just don’t care or have the time or both. I get ■■■■■■ off myself sometimes, after all some of my questions have gone entirely unanwaswered and they are pretty legit issues in the engine and no workarounds have been represented for years to this day.
So there you have it.