You’re missing something. He’s being charged with breaking multiple laws, not just “interfering with a government proceeding.”
The criminal proceeding against him has been tied up in appeals after a Trump-appointed trial judge ruled that one of the criminal laws Fischer is charged with violating must be read very narrowly.
But only one of those charges is being contested. The Supreme Court gets to decide if he’ll be tried on that charge, but it sounds like he’ll be tied on the other charges regardless of what the Supreme Court decides. The headline is sensational, but what else would you expect from Vox?