Well he might be an expert in what happened in the past but nowadays, depositing 100.000 USD would automatically trigger KYC in almost all bitcoin casinos.

The fact that there is a low limit without verification is not so rare either. On the Spanish lottery website https://www.loteriasyapuestas.es/es you can deposit and buy lottery tickets online up to a limit without uploading your ID or Passport as verification. I don't remember the exact limit but I'm sure it's no more than 500 euros. You can deposit 100 without the full KYC, and another 100, until you reach the limit and then it won't let you deposit without uploading the documents. They do this even though you deposit with a card with your name on it.

So bitcoin casinos letting you deposit without KYC for low limits despite having KYC and wagering requirements in their ToS is not that uncommon.