When you see someone like Elon Musk embracing the far right, it's not because the far right has any kind of coherent political or intellectual worldview he agrees with. It's because the far right is the last bastion of shitty people - they will accept anyone regardless of their personal behavior.
The far right have no standards for behavior, identity or beliefs - you only need to share the raw desire to dominate others. The far right welcomes all manner of abusers, thieves, grifters, and scoundrels.
Logically therefore if you're an abuser, thief, grifter or a scoundrel you will eventually find that the only friends you have remaining are far right extremists.