For someone who is depositing less than $500 worth of stablecoins into a crypto debit card I cannot understand why providers ask for KYC-AML for such tiny amounts that is laughable to big time drug lords and rich criminals

Which rich criminal is going to spend his time and resources going to launder $500 or even $5000 or heck even just $50000. The $50000 doesn't even buy you a house nowadays unless were still living in 1980s. $50000 is lower than the average annual wage in the USA.
~snip~
Who says everyone requires KYC? There are many options for such cards (without KYC) and with a very high balance on the card. I don't know if criminals will spend their time to launder money in this way - but in some parts of the world, $50 000 is a real small fortune with which you can buy a house, a car and still have money left over.
What can 1 Bitcoin buy in your country?