No, not at all. The only thing they are changing is the loophole which allowed very rich Thais to keep profits overseas for twelve months before bringing them into Thailand to avoid tax.
It's been 180 days in a calendar year for many many years but never enforced for expats as the cost involved far outweighs anything they'd get back due to the complicated Dual Tax Agreements between countries. Don't worry about counting days, it's never going to happen!