I have seen kids under-two swipe open a phone even before they can run, open a YouTube app to play their nursery rhymes, and switch on the television with a remote. Try and protest, and a tantrum ensues.
Yes, tech tantrums are normal. I can understand why. How much of our day do we spend on our phones and laptops? Our children watch us and want to do the same. For parents too, it is an easy way out to get them distracted and engaged. Addiction to devices is never recommended, as it stunts the emotional growth of a child.