Negative comments are remarks or statements that focus on the downside, flaws, or criticism of something or someone. They express dissatisfaction, disapproval, or negativity towards a certain topic. Full definition
We actually got a lot of negative comments about fishing. (gonintendo.com)
In these bearish times, it is easy to make negative comments on Bitcoins chances, and equally so, it is easy to predict the moon in the good times. (ccinews.net)