Tesla's IR claims are broadly consistent with general sentiment. If you have something substantive to share I'm genuinely interested. But just throwing "how do you know" around as a substitute for an actual argument is just sad and tired.
Back your claim. Apply the same methodology and metric to all the charging providers in the world, because remember your claim is that "nobody has been able to compete with Tesla with >99% uptime".
You set the benchmark so prove it. And if you can't do that then admit you don't know what you're talking about.
Parroting marketing material without applying any critical thinking to it is not sensible. It's always better to back your claims.