Yeah. That.
Seriously, just because a baby isn't in physical distress, eg. pain, hunger, wet, doesn't mean they don't have a need that must be met. There are emotional/psychological/spiritual needs, too, like being picked up, held, played with. Trying to get these needs met by communicating in the only way they can is NOT manipulation or deception. They have (hopefully, if they have good parents) learned that if they cry, the parent(s) will attend to them.
And sometimes babies continue to cry even when held. They may be frustrated about something, still scared about that big dog they saw yesterday, or they don't like the color of the shirt they're wearing. It doesn't mean they shouldn't still be held.
We all know how frustrating it is to not be able to communicate with someone. Now imagine that the person you can't communicate with is the one who competely controls what/when/if you eat, play, sit, lay down, do anything. So they get frustrated. I don't blame them.
BABIES AREN'T DECEPTIVE, or MANIPULATIVE. Period.