Do you believe Blasphemy against the Holy Spirit is not forgivable?

I don't believe in blasphemy 🤷‍♀

No sin is unforgivable. But of course if one repents, then one is no longer sinning against the Holy Spirit.

Blasphemy is only relevant if you're that religion, what good does it do to apply this to everyone

Blasphemy against the Holy Spirit is different from what most people think.