A few things here:
This change actually reduces the profit that the bot makes since the bot will reject and refund bids once it's over this limit in order to make sure that the users of the bot don't have a big loss due to other users over-bidding. This was a highly requested feature by bot users since it benefits them and not bot owners.
Not only have I implemented this change on my bot, but I also added it to the free, open-source post promoter software so that other bot owners can easily implement it too, at whatever rate they want, so that all bots can provide this benefit to users.
If I guaranteed that the bot's vote would be profitable, then what would happen is that spammers would just constantly post a bunch of spam posts and use the bots to make an easy profit. Then the bots would just be used for spam and legitimate posters would have a much harder time promoting their content.
In the future I would strongly recommend that you take some more time to understand the situation, and even discuss it with bot owners like myself privately, before making accusations and calling me "disgusting".
The behavior you are displaying here is the real problem for steemit, the internet, and indeed the world as a whole and not me trying to make a living running an advertising service for content publishers.