Is it useful to check wether MySQL-Query was successful?

I was looking around for some solution in MeekroDB when I stumbled upon this release comment on :

Minor bugfix: successful insert/replace/update/delete commands return true, since some people try putting these in if statements for some reason.

As a matter of fact, I frequently use this approach to test, wether a command was successful. The slightly condescending tone made me question, if it is actually useful at all.