Whoa, colonialism is absolutely alive and well. Colonialist projects, Israel included, still exist today, and of course many countries that began as settler-colonialism (which is distinct from plain ‘colonialism’) still exist everywhere, and still keep their native populations marginalized and under attack.
Israel is quite practically the most textbook definition of a Settler-Colonialist state that there is, especially given that they themselves still even use the term “settlements” to describe their continued displacement of Palestinians.