I personally doubt users would know the word Skeuomorphic, let alone care what the button looks like.
> and I honestly do not want any of my products to perpetuate this emotion.
Why would you not want nostalgia? There are entire product brands built on taking advantage of nostalgia.
And nostalgia doesn't even imply "Hah, this is old and inferior".
Surely that's not appropriate for every brand, though? Especially if you're trying to look cutting-edge.
You can look cutting edge while taking advantage of nostalgia.
To be entirely honest, the "flat design" doesn't look "cutting-edge". It looks basic, which is because, well. It is. Intentionally so. If users don't care what your buttons look like, why spend tons of time making them look a specific style. That's just more time spent.
I'd argue that the reason it's become so prevalent, is exactly that. Less time spent designing, more time spent on features.