What do you say that I get an Xbox Series X and an Xbox Series S?
I don't care which console you buy. The main thing is that you are happy.
It depends on the reason why you are doing this. If the devices just stand next to each other anyway and basically just exist, then I think that's a waste of money.
Do as you see fit. That would be too much for me with my 800 euro training salary and what should I do with 2 consoles? But do as you think, it's your money and you have to work for it. But as I said, it is unnecessary. But each his own.