Nobody likes being told they cant play the Magic: The Gathering game they want, especially in Commander, where there are thousands of unique and fun cards, combos, and synergies to build around
They are not for sanctioned events, and if your goal is deception, you are not proxying, you are doing something else entirely
They just happened to have fear along with some really useful abilities
Of course, Eevee and its evolutions have long been fan favorites both in the TCG and in mainline Pokemon games so this card being extremely valuable is no surprise
Yuna's Decision is basically that same moment, pre-smooching, and also happens to be an absolute new banger of a card
That suggests it's purely a combination of the card's rarity, plus its awesome artwork, that's caused prices to rise