I saw this news yesterday, but I saw no public acceptance of crypto currency in there. It was only made clear that the said EcoWatt is now recognised and could be used as salary payment in the company as agreed, as long as it's acceptable by both the employer and the employee.
This news is born out of the court judgment that ruled that an employer should pay its ex-employee the EcoWatt tokens that were included in the contract as part of his salary. The employer didn't want to pay the employee because they claimed that payment in crypto is not legally enforceable in the country. This landmark ruling has paved the way for the paying and acceptance of cryptocurrencies' wages or salaries. OP might be assuming that this judgment might lead to public acceptance of cryptos.
I read about it this morning. Dubai is becoming a hub for Bitcoin adoption, which is great since it's a popular tourist destination. However, I have one concern. Due to Bitcoin's volatility, many people might hesitate to receive their salaries in Bitcoin, as they want to preserve the value of their money in the long term. This is especially true for those who are new to cryptocurrency. If receiving salaries in Bitcoin is optional, not mandatory, it will be a step in the right direction.
Accepting Bitcoin or other crypto as salaries will be based on agreement between the employer and employee. Even the case that led to this law was about paying salaries both fiat and a token called EcoWatt. Based on the contract, the worker was meant to receive a salary in fiat alongside 5,250 EcoWatt tokens. So, I think accepting crypto as salaries will be optional.