This concern rises from the common misbelief that people "make" each other happy, which means that other people have the power to "make" us unhappy or mad (I'll bet you know people who always blame their anger on someone else). Philosophers have recognized forever that good mental hygiene is really reliant on how WE think about an event, and not the event itself. For example, losing a job can seem like terrible news or hopeful news, depending on the thoughts you have about it. The Chinese symbol for catastrophe and opportunity are the same symbol.
To teach our children that they "make" Mommy happy, sad or angry puts a confounding amount of power or guilt in their young hands. This isn't healthy for the child or for the future relationship between mother and child, establishing the possibility of emotional manipulation and blackmail in both directions. I think a lot of families go subtly off-track with this dynamic, and they don't know what happened, because it's so common that it's actually a part of our language. It's so ubiquitous, it's invisible, like air. And most of us were raised with those messages, so they come automatically, and are hard to change.
Parenting experts generally agree that a very slight but important change in language avoids this common misstep. Instead of "You make me happy when you do that," you can say something like "You sure do help me out when you get yourself dressed." Or help the child own it himself, with "I'll bet YOU feel proud of yourself when you get yourself dressed."
And, according to the lovely little book, How to Talk So Kids Will Listen, and Listen So Kids Will Talk, by Faber and Mazlish, an even healthier approach is to quietly notice when the behaviors that meet your needs occur. Kids crave recognition and approval, and they get that from a very simple comment like "I see a boy who got his shirt on." Don't gush, but give a smile, a touch on the shoulder, a high-five or or a thumbs-up. Once this becomes part of your daily interaction with a young child (or an older child or adult, in my experience), the positive behaviors that will get noticed multiply like happy little rabbits.
For lots more information on current thinking on this issue, google a key phrase like "parenting, praise."
One other thought: as much as granny loves a kiss, I think it's wrong to require a child to give affection that isn't spontaneous and desired by the child. It's then harder for young children to decide when their boundaries are being violated by an abusive adult.