You could get a large monitor, what does the dynamic range do for you? Nobody is saying to use old equipment just why would you buy something so clearly suited

You could get a large monitor, what does the dynamic range do for you? Nobody is saying to use old equipment just why would you buy something so clearly suited for one purpose for a domain that doesn't even involve HDR content? This is also talking about an iOS dev saying this would help test for iPads. How exactly does any of that make sense?