Well that means bots can take anything down unless you become really good at detecting bots. Not like it's hard for bots to get points you can do so with reposting and GPT for comments.
Conversely if you are in the business of publishing spam to Reddit, wouldn’t it be useful if you could overwhelm the site with spam such that the people who care enough report all of the spam they see will get banned?
For how much I see people here saying AI moderation can solve this, I frankly think AI tools are likely to be an order of magnitude better at playing offense than defense - producing huge volumes of AI-generated spam/marketing/offensive content that could fool an AI content moderation algorithm on the other side.