That's a mischaracterization of what took place. The alternate slates of electors were exactly what is prescribed legally and had to exist in case the courts ruled in his favor. If the alternate electors didn't exist, and the case was successful, too bad, so sad, original electors are sent to DC. That's why the electors who were charged with crimes had the charges all dropped. You were witnessing lawfare and media distortions of actual long-standing, but little used processes.
It is not a mischaracterization. Him and his people organized false slates of electors who tried to fraudulently claim that they were the official slate of electors for their state.
You are factually mischaracterizing what happened. It wasn’t just backup slates in case their case went through.
It’s actually the more legally damning set of actions he took compared to J6