Veigar got nerfed because he countered high mobility #LCSBIGPLAYS.

That's it. It's not because "Oh instant stun was broken" because he had had that for years with nobody complaining. It's not burst because again, he had had that for years with no complaints. As soon as he starts getting picked in a role he's not even particularly well suited for but because he is the last remaining counter to mobility creep? Bat straight to the kneecaps that they try to spin as a "change" that will make him "more balanceable" (Pro tip: removing anything a champion does other than damage, then also making that damage less reliable on top of nerfing it does not make them "more balanceable").

I can imagine what it would be like if Veigar were a more popular pick, Meddler. Your game might actually be decent. Know why people didn't complain about him? Because everyone knew there was plenty of counterplay and options against him.