It really does seem like the same thing in reverse. I grew up on a meat heavy diet but I've consistently done better on a vegan diet than I ever did eating normally. The idea that either extreme is necessary is nonsense. While I would strongly argue a diet without meat and dairy can be as if not more nutritious, I would agree that a plant based diet that simply cuts out meat and dairy without replacing them properly would be as short sighted as going full carnivore and wondering why you're getting new deficiencies and issues.
It really does seem like the same thing in reverse. I grew up on a meat heavy diet but I've consistently done better on a vegan diet than I ever did eating "normally". The idea that either extreme is necessary is nonsense. While I would strongly argue a diet without meat and dairy can be as if not more nutritious, I would agree that a plant based diet that simply cuts out meat and dairy without replacing them properly would be as short sighted as going full carnivore and wondering why you're getting new deficiencies and issues.