All of this is super relative and dependent. I'd take 21 sats over one million bot likes or likes that lead to no other value generation. Value here isn't even possible to totally measure, which is why I said it's tough. Word of mouth, etc are all really hard to measure. I've had people see posts, tell me about it in person, and I then went and bought something from the company that made the post. But I've also generated more income from posts with very few likes in the past compared to those with more. It also depends on the goal. You could just want to share information to as many people as possible. Views and likes matter more there.

There isn't a single best option here. It's all relative.

In addition, those 1 million likes are going to come in as many different reaction emojis providing sentiment and humor.