I'm not confused at all. It seems to be you that is confused over the scope and definition of the Common Reporting Standard.
They have no ability of tracing foreign ATM transactions back to the foreign parent account nor does that fall within the scope of the CRS.
The CRS is to share account information i.e. balances of reportable accounts so they can see if taxable income is being hidden.
If you remit money into a Thai bank account then of course they can see the money coming in and if it is a significant amount, and you are a tax resident they may question the source of the funds as it may be taxable income.
I cannot really see this affecting any of us unless you are transferring in large sums from overseas into your bank account, you are a tax resident, and you get flagged accordingly if you haven't declared it on your tax return.