Absolutely not. I strictly play characters I have a sort of emotional connection with. And ever since Smash 64, I've been interessted in playing all the franchises of the characters I found most appealing.
Smash 64 directly got me interessted in Zelda for example. I got Link's Awakening first, and shortly after Ocarina of Time. Was a fan ever since! And since Melee, I also wanted to play Metroid and Kirby, both through the GBA games; Return to Dreamland and Metroid Fusion. Shortly after, I wanted to play Earth Bound, Star Fox Adventures was also my first Star Fox game and it had special interesst cause it was the last Rare-Nintendo console game </3 .. Then also Fire Emblem got my interesst before Brawl came out with FE7, then Sacred Stones, then Path of Radiance and FE6 (emulated).
Could go on, but Smash had expanded my Nintendo game knowledge and experience fastly. Right now, am even interessted in games I thought I would never play. For example Mega Man and Bayonetta, even though I disliked the characters first. Even the Final Fantasy 7 remake is looking interessting to me at this point, hopefully it comes to Switch. There's only a few franchises I didn't play because of Smash, those being Bayoneta, Mega Man, Splatoon, Punch Out, Duck Hunt, Pikmin, Metal Gear, the R.O.B. games, Pac Man, Xenoblade (unfortunately) and Wii Fit.
Anyway, this is also reason I want Isaac so badly in Smash, more exposure to Golden Sun is all the better.