I think the primary reason leftists/statists and shitcoiners are not open to bitcoin or are even anti bitcoin is their world view. Granted, many in my experience don't even understand the basics of bitcoin but they have been told it is bad and that is enough for them. If I were to explain to them the problems bitcoin solves most of them would be meh about it.

That said, if someone is a leftist/statist but actually cares about the poor, is against war, and would like to see human flourishing I think understanding the fundamentals of bitcoin could be a red pill for them.

In general most people are not open to unsolicited advice in general. Leading by example is far more effective in the long run.