No, I wasn't saying it's not a good value. I was saying it's a ridiculous thing to ask of someone that may have a completely serviceable phone that might even be brand new. It's like telling someone to buy a Mercedes or Volvo. It may be a very good product, but that doesn't mean there's not a lot of assumptions in any recommendation to buy one, especially if it doesn't consider the quality, cost or age of your current car other than "not a Mercedes or Volvo".
Except in this case you can buy iPhone for $450 which is less than the OnePlus6 in my locale. SOCs compare favorably between the two devices. I guess I’m not seeing why iPhone is akin to a luxury car brand.
I don’t think the reply was suggesting you get a new phone specifically. They were responding to your claim that iPhone is on face not a good value.