The problem with phone computation is I/O - kids can type well with their thumbs but I can't, and kids can see the graphics on a 5-inch screen but I can't. My tablet is great but the games don't run on Android. Just give me my Model T, officer...
I agree... except I have AR glasses that I can plug in to my 5-year-old Samsung S20+ or I can plug it in to a portable monitor. When using a Bluetooth keyboard and mouse the with Samsung DEx which is included with the phone the experience is very close to using a laptop or desktop computer. I can use Microsoft Office applications and sites like Free Republic with very little difficulty.
Very few phones actually capable of doing this. I researched and found the next to the cheapest used phone model capable of doing this. Of course, then I had to buy one for my wife as well.