The 1.5 engine is not as bad as you might think, it has been thoroughly tested by Proton engineers on Pakistani roads for almost a year. As far as treating Pakistanis differently is concerned, Geely Azkarra (which is the Philippines version of Boyue pro) also has this 1.5T and in fact, Boyue Pro in China as well comes with the same 1.5turbo, mainly because it's a newer engine with comparable performance to the 1.8t.
Another advantage of this was the price which is markedly lower than other crossovers in our market.
Regarding vibrations, this video shows how refined the engine is, the water bottle barely even moves when the engine is running or even revved.
Remember, this is an X50, the added heft of X70 should dampen the vibrations even more.