Back in Vanilla you’d got no issues playing like this if that was your thing, if people wanted the gear this was the way you’d go about it, and solo players like myself who just pvp’d for fun soloed and sometimes did teams with friends or guild and didn’t care about the gear (although the blues you’d probably get eventually anyways)
But the reality is ‘now everyone’ wants the epics, hence the bracket system being born. Some (actually alot! Same people who brought gold to buy epics in raids too) cheeky chaps paid to get boosted, which with the bracket system being run by boosting sellers wasn’t a problem. (as long as the bracket’s were kept low for a quick easy turn over)
Keeping that bracket low though required some real organisational work, so discords were set up and the selling point to the community was (Hey, work with us and it’d be alot less time consuming to get your pvp epics)
Anyone Breaking the ‘set Brackets’ (knowingly or unknowingly) had their names pasted all over the Discords set up, to be punished, be it’d by spreading false rumours (calling them ninjas etc) getting guilds to black list them or any other method they could manipulate actual players to go along with who just wanted that juicy easy pvp gear.
Many dudes/dudette’s playing Classic wow, trying to just relive those Vanilla days who accidently broke an imaginary Bracket system (set as low as possible) suddenly found themselves getting abuse despite blocking those abusing them as they created new chars, getting followed around and spat on, getting all their items on the AH under cut, getting their fishing pools fished in, getting banned from raids or dungeons ( as many of these pvp boosting also run the raids to sell raid items, for gold they were also selling! 
)
Fact is people who Work alot don’t want to PVP 24/7 and people who enjoy and have the time to do alot of PVP (who probably don’t even care about gear) don’t want abuse or aggro for just enjoying the game. what worked in vanilla clearly did not work in classic, instead it created a sea of toxicity and made many people turn away from Wow to play other games that felt less toxic. (those working “alot” who ‘felt cheated’ by bracket breakers and those who got the abuse and harassment for breaking the imaginary bracket system)
Only real winners here, was the people Selling the services… 