Quase certamente não foi.
O Lorde das Trevas derramou o nome de Tom Riddle assim que foi possível, e mesmo quando ele era jovem, era o nome de Lord Voldemort que ele esperava que os magos temessem.
“TOM MARVOLO RIDDLE
Then he waved the wand once, and the letters of his name re-arranged themselves:
I AM LORD VOLDEMORT
‘You see?’ he whispered. ‘It was a name I was already using at Hogwarts, to my most intimate friends only, of course. You think I was going to use my filthy Muggle father’s name for ever? I, in whose veins runs the blood of Salazar Slytherin himself, through my mother’s side? I, keep the name of a foul, common Muggle, who abandoned me even before I was born, just because he found out his wife was a witch? No, Harry. I fashioned myself a new name, a name I knew wizards everywhere would one day fear to speak, when I had become the greatest sorcerer in the world!”
- Harry Potter and the Chamber of Secrets, Chapter 17 (The Heir of Slytherin)
Assim que pôde, ele abandonou seu antigo nome e mais tarde ressurgiu no mundo mágico como Lord Voldemort.
“There he showed his contempt for anything that tied him to other people, anything that made him ordinary. Even then, he wished to be different, separate, notorious. He shed his name, as you know, within a few short years of that conversation and created the mask of “Lord Voldemort” behind which he has been hidden for so long.”
- Harry Potter and the Half-Blood Prince, Chapter 13 (The Secret Riddle)
Uma vez que Tom Riddle desapareceu, nada mais se ouviu falar dele pela maioria do mundo bruxo que não sabia seu novo nome.
“But before they were sure beyond doubt that the cup and the locket were both gone, the assistant who had worked at Borgin and Burkes, the young man who had visited Hepzibah so regularly and charmed her so well, had resigned his post and vanished. His superiors had no idea where he had gone; they were as surprised as anyone at his disappearance. And that was the last that was seen or heard of Tom Riddle for a very long time.”
- Harry Potter and the Half-Blood Prince, Chapter 20 (Lord Voldemort’s Request)
Depois de deixar seu antigo nome, o Lorde das Trevas não teria considerado o nome "Tom Riddle" digno da inclusão do tabu. Ele deixou esse nome e identidade atrás dele muito antes disso.