Personally i'd see the first one as suggestion, but the second one is more complex. If it was just "It sucks you got rid of feature x" i wouldn't see it as neither suggestion nor demand (personally i dislike some changes in GIMP, see my other comments in this thread, and do comment on them if they are brought up, but these are just comments about how i see these changes, not suggestions and especially not demands).

The "bring it back" makes all the difference though and yeah, to me that makes a demand.