Ultimately, it comes down to a passive play style versus an active one, and due to a combination of speed and strategy, the latter will always win.
It wasn't the fact that they just started - they actually were in it a little bit longer than people have known - it's just that it started to go viral. The last time Pokmon cards saw such a significant rise in interest was in the wake of Pokmon Go, the hugely popular mobile app that became the summer phenomenon of 2016
Charizard used to sell for $100 back in the day (English) :)
Aside from their name, lore relevance, and single-card rule, there isnt much else to distinguish SP Pokmon from regular Pokmon
#11 Bought 2 "bundle bags"(idk what else to call it lol) today at my local Kohl's, they are charging $17.99 before tax *shrug*
A deck that would love this card is Kalamax, the Stormsire