I do not think these measures will affect tourist numbers, the measures are fair and backed by both the Chinese and Thai authorities.
Most tourists are aware that other countries and cultures have different rules, regulations, and laws that have to be adhered to when we are visitors or guests in that country.
The article says that four million Chinese tourists visit Thailand every year, and that it is only a handful of visitors who do not respect the laws. If this handful of visitors is not happy with the new Thai rules and regulations, then they are welcome to visit other destinations. Thailand is a beautiful country and we need to keep it that way in order to attract the other twenty million or so visitors who come here every year.