"I hate seeing kids in prams holding phones or ipads."
Well there's something I have never seen!
I think you need to take the baggage of technology away. Let's replace that with 'reading'. At one point (admittedly a long time ago) reading would have been regarded as completely unnecessary, only likely to get the lower classes expectations above their station. Children should be getting sent up chimneys or taught how to use a loom, something useful. Fast-forward, my childhood was spent with my nose in a book, and reading was essential for modern life. Illiteracy was something that consigned you to the poorly paid jobs when older. And then we come to today, when technology is in every part of our world, involved in pretty much every job, desk-bound or no.
Play is not just some standalone activity. When tiger cubs play, they are learning to hunt and kill. When human children play, they are learning to interact with their society. If that society is riddled with tech, they need to get familiar with it or - well, be illiterate with tech.
I think you are being very blinkered towards tech. And potentially putting your child at a later disadvantage. Social media is not compulsory, but it is useful to know it exists and how it works. It will undoubtedly change again before your child is ready to use it. I am old enough to remember the world pre-internet. It was no utopia.
So yes, I agree with your family. You are being a bit mad. It is not just a lazy way to shut your kid up, it is a way to prepare them for the big wide world.
I mean this kindly, though it will not come across this way. You don't have children now, so you can have these opinions based on your own experience. But your child is your bridge to the future, and what worked in the past - your childhood - is most unlikely to work for your child. And it is your job as a parent to put aside your prejudices and meet your child's needs.