I purchased no-name Bluetooth wireless earphones for ~$55 USD before the AirPods Pro, and they were shockingly good for the price (super small, lightweight, long battery; similar observations that your wife reported about the Nothing headphones). I got the AirPods Pro after that, expecting a massive upgrade, but really the only significant difference was the noise cancellation (which is why I still use them primarily). The easier switching between Apple devices is nice too, but for my use case, I mostly use the AirPods on my phone anyways.

So for the price differential between generic headphones, I would expect a massive upgrade, but now it feels like a nice upgrade but pretty expensive for what it does (especially since I'll have to consider replacing them once the battery degrades).