Totally. Most websites where you show and vote for a product (HackerNews, ProductHunt, etc) are ridden with bots.

For example, one person here offers: > Our AI generates relevant, useful replies to selected mentions, that aim to genuinely help the original poster, and that include a subtle mention of your product.

and ProductHunt: https://wakatime.com/blog/67-bots-so-many-bots