Life is always changing, just look back 30 years ago when barely anyone was using the Internet or cell phones. And now we can do basically everything we need with our cell phone and just stay at home. Nobody needs to buy a huge desktop PC anymore, a tablet or laptop will do the same job while taking no space away. While being part of the change it seems like only small adjustments to our way of live, but during crisis times like corona, we realise how much our life is actually changing. I like the new normal with working from home more.
When the smartphones first came in to existence (around 2 decades ago), there was a lot of criticism from the "experts". They were saying that mobiles will never be able to replace the laptops and desktops. But in almost no time, smartphones poached in to the share of computers. Nowadays, the majority of users browsing internet use smartphones. Even for watching movies or movie serials, smartphones are being preferred. One reason is that time is scarce now and a lot of things need to be done simultaneously while traveling or working. Laptops are not suitable for this purpose.
Mobile phones really can not displace laptops and desktops, quite another thing is smartphones, which are simply a smaller version of laptops and desktops and therefore have much greater mobility
Personally, I see little pleasure in watching TV shows and movies or conducting professional activities on small smartphone screens, but not everyone can afford to have a large TV screen, display, and most importantly, financially, too, due to lack of space. That's why billions of people stare at the small screen of a smartphone, while spoiling their health and vision.