I think it's more dangerous as a parasocial playground. You think you are making friends, but in fact it's a poor substitute and doesn't carry the risks/benefits of proper bonding with another human. This is independent of whether the other person is a bot or their communication is curated by an algorithm.
Risks - you might be exposed to an idea that challenges you, you might be bored for stretches of time, you might think the relationship is stronger than it is for the other side and embarrass yourself, especially if you read romantic interest. You might have to alter your behavior in the name of social grace. You might lose that companion.
