There should be absolutely zero influence from Cho Jin-woong regarding the airing of Signal 2.

‌Since it was such a massive incident,
it's inevitable that Cho Jin-woong will be mentioned..
While it's unavoidable that he'll be brought up often,
I think it's meaningless to argue whether that constitutes a comeback for him or not.
I understand the sentiment that the show shouldn't air because people don't even want to see his face,
but I don't understand the argument that "it shouldn't air because he might use this as an opportunity to make a comeback..."
He is simply someone who committed an unforgivable, violent crime,
and there is no reason or need to forgive him...
There is no need to talk about comebacks or anything else regarding someone
who should be permanently expelled from the entertainment industry.
We should just think of the show airing for the sake of the victimized actors and staff who worked with him.
It would be best to refrain from mentioning Cho Jin-woong as much as possible,
but since that probably won't happen... I think we should just vent our frustration whenever his face appears and leave it at that.