I don’t want a copy of Reddit’s culture on Lemmy, but I think Lemmy’s culture will be similar because of the interaction format and because a sizable number of Lemmings I presume use Reddit and Lemmy both regularly. So it will be up to how close the viewer looks to determine if they seem the same or distinct.

I think one thing I don’t see much on Lemmy are the very tired 3+ nested comment chains that don’t add conversational value, like “and my axe!”. I’ve only seen it very occasionally, and usually in good joking taste, for example the trope “[term OP used] means this, you probably were thinking of [also incorrect word]”.