What matters is that there is no evidence for a Semitic slave population in the Delta
Barnes says that the Israelites were prevented from leaving Egypt, rather than enslaved:
Exodus 1:10:
"Come on, let us deal wisely with them; lest they multiply, and it come to pass, that, when there falleth out any war, they join also unto our enemies, and fight against us, and so get them up out of the land."
Barnes: "The Pharaohs apprehended the loss of revenue and power, which would result from the withdrawal of a peaceful and industrious race."
Exodus 1:11:
"Therefore they did set over them taskmasters to afflict them with their burdens."
Barnes: "Taskmasters - The Egyptian "Chiefs of tributes." They were men of rank, superintendents of the public works, such as are often represented on Egyptian monuments, and carefully distinguished from the subordinate overseers. The Israelites were employed in forced labor, probably in detachments, but they were not reduced to slavery, properly speaking, nor treated as captives of war. Amosis had special need of such laborers, as proved by the inscriptions."