The devil is in the details or lack thereof.
Not getting the provident fund is effectively a further 12% reduction in salary so you are actually looking at a 27% basic pay reduction.
To meet operational requirements, you can be assigned 2 blocks of 13 days off, which means they can then assign you 2 blocks of 28 days, in other words you can do a 56 day continuous block.
Days off can be assigned at outstation so theoretically you could leave Dubai on a duty and not return until the end of your duties, 28 or 56 days away.
A monthly accommodation allowance only, does that mean you won’t receive it when you are on your 13 or 26 day off block.
And so on...
Sorry but they can't be trusted.