When you send a lot of ETH or USDT to a big exchange like Kraken, do they care if its come from a smaller non kyc exchange like Blofin? Do they care if it came from a bridge?
They usually don't care that's why they don't ask you to always tell them where the deposits came from. They'll be concerned when the deposit gets flagged because the address was involved in a scam and it has been reported. Receiving coins from mixers can also be a problem as you'll be asked to show proof that you own the coins and it isn't a stolen cryptocurrency. Some exchange don't ask you for any proof but they will close your account unaware when it has to do with an address that has a high alert from the federal government through the SEC. Usually coins from mixers are the one that gets flagged the most. It's always good to not deposit directly from a mixer or casinos into an exchange but pass the transaction through your personal wallet so you can sign a message to prove ownership if the need arises.