I'm not a social media person so I can't provide input on other platforms. On Steemit, well, I have seen 'fake nice'. Perhaps some people don't see it because they choose not to, or they don't pay any mind. Only reason I notice sometimes is because my work profession is in the field to 'dig for truth', 'find the root cause' of an issue and come up with a solution. My reaction to the 'fake nice' on here is simply to stay away from those individuals. Surround myself with good and sincere individuals (in my eyes anyway). Problem solved!