RE: Truth behind whales!
Some whales are actively trying their best to find and upvote non-Steemit-circlejerk, quality original posts so that the site doesn't swim into a whirlpool of self-congratulation and instead fills its best and highest use, rewarding people for sharing awesome things. At least one large stakeholder has even hired multiple people to find worthy posts for them, and their vote currently carries about $350 in total rewards.
Most of the people with a large stake understand that the value of Steemit determines the value of their own stakes, and are trying to make Steemit the best it can be.
In your case, some users do not believe having an automated message in every post is a great idea, as the noise is drowning out the signal in the comments. I applaud you for crafting a helpful message but I also somewhat agree that there are too many automated bot posts and they need to be discouraged. Downvoting and minimizing these comments is the tool available to discourage it.