Sure. I think there is a name for that specific kind of sockpuppeting but I don't remember. People do that, comment on their own post and it works. I don't think it's bad per se. What works best is replying something outrageous or wrong... Because people like to object and correct people more than they do write positive comments.

In my opinion it needs to be genuine. I'm okay with lots if things if people are interested in an answer. What I don't like is artificial boosting of engagement or manipulation. If people only do it so the number of comments increases and they aren't really interested in my answer... It just wastes 10 minutes of my day replying to them instead of helping someone with their computer troubleshooting.

Ultimately, I'm not sure where Lemmy is headed. I had quite some good conversations here. And I had some bad encounters. Overall I think it's a positive place. I don't think we have to grow just for the sake of it. But we definitely need more people and more engagement to make some communities useful.