[cwillu]

If you perform marketing and/or evangelism for your project, it's not at all obvious that you owe your users nothing.

[growse]

The act of marketing software doesn't invalidate the license, which often explicitly states that the software comes as-is and free from warranty / support.

[caturopath]

Offering an as-is disclaimer doesn't rid someone of all social, moral, or legal responsibility.

Saying things that conflict with that disclaimer does indeed chip away at the effect the disclaimer has on your responsibility.