There is no problem coming in wanting to earn, but they won't earn much or last long unless they become part of a community here - something they can add value to.
But most people don't want to evolve, they want to put in low effort and expect high rewards instead of consistency...
But, most end up doing this.
I saw it too but then again is it possible that most of those bot accounts are people who were never really part of the community
Yes, possibly. However, the most staked users from the early days, came in through Hive (Steem) first. Many of them have championed bot accounts too - and also aren't posting into the community. They want their investments to go up, but they don't seem to want to be part of helping to do that. One of the values of Hive and perhaps the drawback too, is that we can affect outcomes - the responsibility is on us.
The thing with most people is they don't think that they have anything of value to add.... But just there mere presence is more than enough.
It's sad that people are so closed minded....