Deadbeat dad PRAISES my son having a tantrum. Do I stop talking to him?!?!

The father of my child, who Is 3, has never met our child. This is because he lives in another country and didn't want to work on this family but instead find someone else and make a new one, after I left him for abusing me.

I still have a heart and feel safe sharing information about how our child is doing. So for example our son revently has started to have really bad tantrums and so I told him about them to which he replies "that's my boyy", again the next day I sent a little clip of our son over reacting to something and all he said was "looks like a proper tantrum, good luck with that.".

❌He doesn't pay child support

❌He never asks the wellbeing of his son

❌He never asks for photos or videos I just send them cause I'm nice.

❌He never offers to buy new clothes or toys, anything our son has ever needed.

❌ He has a new girlfriend who he now lives with and is raising her children with, they've only been together for 3 months.

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Do I just stop trying to see if he Contacts me?

Or should I remove him completely from our sons life?

Because honestly my son doesn't even know who he is and I always said it would mess him up, especially at this age if he only Skypes to see him literally once every few months.. If that man cared be would call a hell of alot more but he doesn't.