obsoletist - Someone who clings to outdated gadgets like they're the last

Someone who clings to outdated gadgets like they're the last piece of pizza at a party.

'My laptop is slower than my dog, but I won't upgrade because it's got sentimental value.'

'I still use a dial-up internet connection because I'm too lazy to learn how to use Wi-Fi.'

'I play Tetris on my phone instead of using the actual app because I'm too cool for modern stuff.'