Has blizz gotten better at balancing over the past few years?

Last I played was SLands and I brought in a few first timers in with me. We were all pvp players and eventually everyone that started with me dropped due to the pretty absurd number of 1 shots due to gimmicky covenant abilities primarily. Alongside this, my friends in lower ranks were routinely running into people in 1800 gear when they were pushing 1200.

Has blizz gotten better about people boosting and balancing more regularly so we aren't waiting months for blatantly broken things to get toned down?