yes because everybody knows about it now and all are using it.
Use the tool mentioned above so you will not be bidding on a bot that already have too many bids on it.
The bot creators should have made the bots not to accept more bids if the return is gone to 1;1 ratio.
I don't find it reasonable to bid on upvote bots that create 1:1 or a loss... Thanks to the Upvote Bot Tracker I do not have this issue.