Do I unadd my ex

It’s been around 40 days no contact with my ex . When we broke up he said not to unadd him or block him. He said it’s unhealthy and toxic. I just really don’t see the point of him access to me. I guess I might be still holding onto hope of him “running back” or “regretting” it but I feel 1,000x better without him. I literally avoid going on Snapchat because of the fear of him contacting me or seeing him post. I completely deleted his number so I am unable to block him but am I wrong for wanting to unadd him?