They have different rules for each country they operate in.
And they all have KYC.
"Most" crypto exchanges won't be around for long if they don't become pro regulation.
South Africa is simply following the standards already in place or proposed by most other countries.
More than 40 countries have taken aim at advancing crypto-focused regulations and legislation this year, signaling wider cryptocurrency adoption globally may be underway. That’s according to a new report from professional services firm PriceWaterhouseCoopers.
www.coindesk.com
Still don't believe me? Have a look at this chart.
New interactive database analyzes the state of cryptocurrency regulations in 25 of the world's largest economies
www.atlanticcouncil.org
AML/CFT is baked into the regulations for most countries and volunteered by good exchanges in the countries that don't force it.
Local exchanges have been doing this actively for many years already in wake of regulations being defined in SA and being ready beforehand.
There are entire business dedicated to the Travel Rule mentioned in the article servicing the crypto industry.
People love to think these exchanges operate all by themselves and just rake in the cash and love to moan about "high fees for doing nothing" but there's a massive industry at the back of them all making it all work.