Were Hyksos from Syria were never truly accepted into Egyptian communities and were always considered foreigners although they controlled Egypt?

Answer 1

True.

The Egyptians considered the Hyksos as foreign usurpers of the Egyptian throne. When the Hyksos were eventually driven out of Egypt, all traces of their occupation were erased. No accounts survive recording the history of the period from the Hyksos perspective, only that of the native Egyptians who evicted the occupiers. However, conversely, the use of Egyptian names and symbols in the hieroglyphics of later Hyksos rulers indicates that the Hyksos considered themselves relatively Egyptianized.