Removing a group member on facebook?

[Aisu]

So there are some issues going on in a group of my best bros and I just want to make sure one thing: I will remove one person from the group (for now), however, that person's post is what we comment on. It sounds stupid but we have more than 10k comments on one post and we'd all like to keep it there; but the person I am removing from the group, way way back, originally posted it that started it all.

So, if I remove the post creator from the group, will ALL their posts be removed as well?
Hopefully the answer is a simple one, but if not, thank you anyway! Hope everyone has a good day/night~!