Culturally and ethnically, yeah, they were. Without the guidance of Britain and Holland, these people would've never become cultured. If it were just some people running away, without any powers, they would've been just a bunch of poorfags, religious cultists and heretics, and farmers. The people that left Europe were still sucking the European teet, and that's what made your Revolution possible. Without the European folks, you would've been literal nobodies that couldn't possibly wage a war with Mexico, let alone become a world superpower that could hold Russia still despite being thousands of kilometers away from it.