There are multiple forms of colonialism. The term settler colonialism' is relatively new.

Settler colonialism is a logic and structure of displacement by settlers, using colonial rule, over an environment for replacing it and its indigenous peoples with settlements and the society of the settlers.

Practically every example you will find is Europeans getting on a boat and killing natives. The most famous example is Manifest Destiny also known as America.

You’re making the above poster’s point for them. Well done. It’s pretty fair to assume that Mo Salah’s ancestors were of that same land regardless of what religious or cultural identity they came from.