It both helps educate the player about red's weakness and allows the Johnnies of the world a chance to turn that weakness into a strength
For example, lets compare two cards that are similar: Frost Lynx which freezes, and Frostfist Strider, which puts a stun counter on a creature
Sometimes, the non-ex version of the card is actually more beneficial, and that's definitely the case with this deck
destroy it, also, during your Main Phase this turn, you can Normal Summon 1 "Scrap" monster in addition to your Normal Summon/Set
Overall, there are three primary classes of cards that people get graded in the Magic world: Reserved List cards, old and iconic cards, and specialty prints (by which I mean serialized cards and artist-proofs, among other oddities)
However, if you are going to dive into the real high-end strategies in YuGiOh, grabbing some Link Monsters, the strongest of which are integral to meta builds, is a good mechanic to learn the ropes of