I really don't agree. Yeongwoon gets to decide how he handles his trauma. Moving on is a perfectly valid way of doing that.
This is like telling a rape victim how to process and move on from their trauma. Or a rape victim's partner making the rape about themselves and their need to assert control over the situation / punish the perpetrator even if it will just dig up the trauma. No one but the victim gets to decide what healing is for them.

I know yeongwoon wants to just get over his trauma and move on, but in reality he’s just avoiding the problem at its root, it will eventually just blow on his face or between his and seo-in. He’s hurting so much his conscience just tell him that blocking and shutting down the problem will solve everything but it won’t, omfg I just wish they could have a really long talk between them my poor yengwoon deserves so much, he’s honestly just better away from all of them.