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So when I found these unopened blister packs in a separate location when going through the rest of my father's belongings (including about 500 science fiction novels), I felt like that 13-year old kid again

That means the actual act of using a plot ability doesnt use the stack and cant be responded to

Prepare to face your greatest test...

In November of 2021 (April 2020 in Japan), these restrictions were lifted, and only Link Monsters follow them, along with Pendulum Monsters in the Extra Deck (see their dedicated guide for more information)

If you dont control it, its controller loses 1 life. This flips the script

Just like that Eevee, this Eevee with the Boosted Evolution Ability can ignore standard Evolution rules and evolve during the turn you play it