In theory you could be but they only really invoke that requirement if your entry history is vast or you’re doing back to back entries and they’re looking for a way to deny you.
Very very very few people are ever asked to show cash.
As explained in earlier comments you *could* be asked for these three proofs, although highly unlikely with your previous entry history.
No one here can guarantee anything as it’s up to discretion of the officer you hand your passport to.
If asked about funds it has to be in cash. 20k baht or equivalent in any major currency. A bank balance, phone app or credit card won’t suffice.
That said it’s incredibly rare to be asked. They can ask but almost certainly won’t unless you have an extensive history of back to back visa exempt or tourist visas and they think you are trying to play the system for a long term stay without any valid visa to do so.
90+ percent of people aren’t asked for these - but you’re right they could be. Generally immigration will only ask for these if they are looking for a way to deny you entry.
Visa exempt entries are for 60 days on entry. You need nothing other than your passport, last boarding card and a filed TDAC done within 3 days prior to arrival.