It wouldn't stop the QQ. People would complain that they have to do raids that are much harder but other guilds can do normal modes and progress and clear faster than the can.
In the end , what it boils down to is that hard core raiders want raid dungeons to be for them and only them. They do not wany any kind of easy mode accessibility.
Hum, if you read closely the capacity of the boss/mobs, this fight seems to be much more than a simple grobulusbis.
Yes we have infections. Yes we have blobs.
BUT the blobs spawn directly uder the player, and that players takes quite a lot of damage from the curse itself (3900 to 4100 damage every 1 sec) with 50% heal (so need a really quick dispel. But even with a quick dispel, the player still take 2925 to 3075 damage every 1 sec and decreases move speed by 50%.... think of the poor clothes....
Moreover, those little blobs need to be killed asap, otherwise you will first take damage, and it will soon merge with a big blob. And if a big blob gets 5 merging, Bam 9750 to 10250 damage ...
I dont know the fequency of the curse, but it could become really fast a big mess with blobs exploding everywhere and 50% runing speed goo spread everywhere....