3 for 50 isn't that horrible in the grand scheme of things. Furious Fists Eevee's attack is 2 for TEN for example, and there are plenty of 3 for 30s, even ones requiring a coloured energy, like Ancient Origins Beldum and Primal Clash Tangela. To be fair, these are all evolving basics, but Pikachu Libre is the kind of Pokemon that should be treated that way anyway, even though it can't evolve. It's not like we're going to get a serious non-EX Pikachu with like 100+ HP and a usable attack, and Pikachu doesn't even lend itself well to like a support Pokemon role.
Pikachu Libre is by no means an even remotely usable card, but there are far, far worse cards out there.