悪質かは置いといて今日は集まり悪いですね。
This "question + は置いといて" looks like a common construction based on Google results but I can't find an explanation of it.
But my guess from staring at it long enough and considering the "putting aside" meaning of 置く is that this perhaps means:
Putting aside the question of whether I'm being a jerk, today's gathering is bad, isn't it.
Is that correct?