They dont listen to players. They look at data like participation and desing game around this data. They completly ignore actual reasons why different players play different content. Look at LFR. It has high participation but it is most boring and faceroll snooz fest. Nobady enyoj doing LFR everyone just want to do be done with it. But Blizz see high parcipation as players doing it for afk free titanforget gear or w/e and think system is ok nothing wrong here. Or islands. Boring as *** but it os only good source of ap so again same scenario. And if something have low participation blizzard throw in mandatory rewards.
LFR in WoD was dead. Nobady was doing it as gear from WoD LFR was garbage. So what Blizzard did was make LFR only good source of valor and suddenly everyone start doing it again. Yes people do taht content but nobady is having fun. Which is somethig what can keep players playing only for so long and BFA is where players got sick of it alredy. When Blizzard will focus again on what is fun, epic, exciting and interesting than game will get better. Till then keep participating in boring content.