I'm just getting back into Yu-Gi-Oh and have no fucking clue what the mention decks are like but banning Decks left and right just because of "Reasons" seems too Smogon like to me. I rather struggle and learn than be protected or babied.
Its not "reasons", those decks have near infinite loops and chains of effects with extremely beneficial outcomes, the only way to beat then is with another meta deck that can gain advantage just as fast. For new players, it would just be watching the opponent play by himself.
Not only that, but they can lock the opponent and render then unable to do absolutely anything. Look up "Apoqliphort Towers" or the infamous Djinn lock.
Not saying other decks don't have similar abilities, but the lists and new cards have make them more manageable.
The idea of the tournament is to play with our favorite decks for fun and to help any returning player to catch up. Long endless turns finishing on an OTK, kinda defeats that purpose.
Were just banning the top 5 decks of this format, you can use a top tier deck that have been balanced a still bit more after the years, like Samurais
as for your question, No.
machine decks now rely on new mechanics.
The Cyber Dragons use Fusions and Xyz, while the Geargiar are more Xyz oriented.
Classic machines like Yugi's Gadgets now use Pendulum summon to make up for the banning of several trap cards.