I have an ancient iPad 2 or 3 from the time when Victoria was queen and everyone wore britches and ate fox for lunch on Sundays. It sits by the bed in case I'm grabbed by the urge to look things up.
It's slow and a lot of modern web pages can kill it dead, but it works for Wikipedia*. Apple haven't deliberately done this, it's the way of things, why are people going to develop services for a device nearly a decade old when newer devices have far faster chips and enough memory to lose an elephant in. It's a bit like arguing that the web was fine when all the pages and grey and the text was times new roman or times new roman italic. Modern browsers, of course, use up far more resources, web pages are just simple HTML, there's document models, scripts, stylesheets and a million other things. Because they can.
*while my wife takes forever in the bathroom, I like to dilute my frustration (and contemplation of finally biting the bullet and getting another bathroom) by learning exciting new facts. Plus it's far too slow for smut.