Wuk Lamat didn't ruin the MSQ in the first half, at least. It was when the second half hit that it became unbearably awful and forced. The author basically wanted Sphene to be a dark mirror to Wuk Lamat but it just went into a freaking dumpster fire from the forced dialog and stupid decision making that didn't account for anything involving the lore of the past expansions. Just because it is a new start doesn't mean that all the existing lore suddenly gets voided.