Any growth that isn’t organic isn’t gonna last because it isn’t real. You can artificially inflate your participation statistics with artificial participation, but as soon as that ends, you’re going to return back to your base numbers. It’s extremely unlikely, in my opinion, that what you’re proposing would actually trigger organic growth on its own that would be of any meaningful or lasting quality.
I’m not saying you shouldn’t try, and maybe I’m wrong. I’ve seen people try this on reddit and have it not work, but maybe lemmy is different. also, perhaps it depends on the community/subject matter itself?
best of luck!