I disagree.
Lemmy is also a link aggregator which works in a similar way to reddit, but it has it’s own history, culture, and quirks.
Sure, things will happen on Lemmy which are reminiscent of reddit because they’re both link aggregators, but to say lemmy “is” reddit is very reductive.
I think that an obvious bot can still manipulate users. Fb has infinite resources with which to test this stuff prior to roll out. They skittish do it if it didn’t work for them.