First of all, try to understand the mechanics of being on an expat term. The upsides are that your pay is much higher compared to those on local terms. Downside is that there is no job security as the company views you as a removable commodity. Expats in any company offer the company a sort of flexibility to get rid of during bad times.Not much compensation to pay compared to those on local terms.
If u r not happy, simply give up ur native citizenship and apply for a Singapore passport and come in on local terms.Singapore immigration would be more than happy to offer you one. Don't whine abt it. If a local pilot was asked to leave over an expat with all things being equal, there will be a huge big political turmoil. It applies to any industry.
And the 777 coming close to 500ft ASL happened in LHE. Unless this is another new one. It happened bcos of incorrect calculation of the airports elevation.
And abt the QR recruitment, I've seen alot of ex SQ and MH pilots flying for QR and EK and they say it's much better compared to SQ in terms of $alary and benefits. But they say they still miss SQ for it's camaraderie among it's stuff. I've even seen a SQ pilot in CI.