I've witnessed two opposing narratives:
1) Kids today are more computer literate because they are exposed earlier to computers than ever before, which are more accessible and embedded in every day life, including in peer-reinforced activities. They intuit the common interactions, allowing them to pick up new systems quickly. For children, computers are like a new "language" which their agile minds are better suited to learn than for older people.
2) Kids today are less computer literate because the predominant uses are increasingly abstracted around humanized GUIs, and even "advanced" actions are procedurally simplified to steps that require only a basic literacy with much less an understanding of the underlying structure than you had to know in decades past to do basic things. A similar situation happened with cars: many fewer today know how to drive manual shift because automatic transmissions predominate (this might be a U.S. centric statement, but you get the drift) whereas once you had to learn in order to use a car at all.
Perhaps this question will get more anecdotes than data, but I was surprised in this day and age how hard to was to find quality studies beyond skills like "can you check your e-mail", when news cycles increasingly whip up a moral panic about automation wiping out massive numbers of jobs.
Curious to hear other (especially international) perspectives.
An interesting thing is your 2nd narrative (e.g. kids aren't computer literate because interfaces are so simple) has actually had a knock on effect to non computer skills.
For example, they noticed 5 years ago that childrens ability to pick up writing skills (fine motor skills with a pencil) was diminishing. At the same time, the school had purchased a bunch of tablet computers. They noticed kids could easily point a finger. And have since done a survey each year with parents to assess how many kids have tablets at home.
Year in year, the ability for children to learn to use a pencil has diminished, and the number of kids with tablets at home has increased.
In summary, simplified computer interfaces have made kids/parents lazy in developing fine motor skills and it's affected their ability to learn to write.