BFA has been so bad people just want to be very CRITICAL of SL to make sure its good because if it flops like BFA did, WoW may never recover. People like Preach are doing the right thing by pointing out anything that may be a potential issues(for example pointing out the Paladin Blessing of Seasons Covenant ability that got removed) so that when you finally get your hands on the game its no the best possible state it can be and you wont have to wait until or 9.1 or a 9.1.5 or even them trying to spend the entire xpac trying to fix things and still fail like BFA.