"If you would like to introduce your child to woodworking, after an interest is shown of course, would you prefer to just buy the DiResta kit or some basic handtools and raw materials?"
I have done it both ways and I think kits have their place. Example. A guy at work was a cub scout leader. The kids are supposed to make a toolbox roughly similar to the one you posted, to stimulate interest in making things. He asked if they could come to my shop and make them. To keep them safe, I settled on a kit-based approach. So I bought clear pine and made kits similar to DiResta's. The kids and their Dads pretty much just screwed them together. But the sense of accomplishment was vivid. Later, some of those kids liked it enough that they helped build a deck. Another helped Dad build a doghouse. Now they are in high school and at least two have stopped by to show me a project they built in FFA.
I dont think there's a right way or a wrong way to start people in woodworking. The only thing that matters is that they stay safe and that they have fun.
"All that is necessary for the triumph of evil is that good men do nothing."
“If you want to know what a man's like, take a good look at how he treats his inferiors, not his equals.”