Even if DST did save something (it does not), it becomes a problem when your timekeeping is done by computers. My computers know I live in Poland (Europe/Warsaw), and they know the DST rules. I can trust the time on my computers’ clock matches the official time the government recognizes.
In Palestine, this depends on my OS vendor managing to update the tz database in the short window before the official announcement and the decision coming into force. (I believe the tz database makes some assumptions based on past performance, but the government can change their mind any year.) If my OS does not update, I need to change my time zone manually to something that has the right UTC offset, and then I need to manually change back in the autumn, and I can never be 100% sure if any given computer shows the official time.
In Palestine, this depends on my OS vendor managing to update the tz database in the short window before the official announcement and the decision coming into force. (I believe the tz database makes some assumptions based on past performance, but the government can change their mind any year.) If my OS does not update, I need to change my time zone manually to something that has the right UTC offset, and then I need to manually change back in the autumn, and I can never be 100% sure if any given computer shows the official time.