The reason why this request from LEPs angers many expats is that all expats pilots have made a big sacrifice to move their family away from their home country. In order to entice expats to do this, the company has to make it worth their inconvenience. That is why they offer expat benefits. It is the reward for the sacrifice.
If you are a local pilot then you have not made the same sacrifice. If you feel that you are underpaid, then by all means, you should argue and demand higher pay. But that is very different from expat benefits and the two should not be confused. If you want expat benefits, you can get them from many carriers that are currently hiring in the middle-east and India.