To break it down tsm is like dbm/big wigs for raiding, all it does is make the information easier to comprehend and makes it easier to post/cancel in large quantities. Imagine being someone like me with 10k or more items to post and the default auction house system. Or better yet try raiding without any addons especially in mythic, people are so reliant on their addons which I don’t think this is a super bad thing as blizzard is incompetent when implementing decent systems they’re always behind, I mean who uses the guild finder lol, or the calendar other than to find out what event is up this week.
People just hate on TSM and such because they’re ignorant to how and what you can do with it, they’re also I’m sure jealous about the gold people have made and are too lazy to do their own research to do the same thing. Gold making isn’t hard but when you explain what you did and how long it took you people are in disbelief like it never happened, I guess in a single word you could call them defeatists.