He couldn’t be lying, we saw him blow up the books on panel. Whether or not Hickman bother with an explanation, we’ll see...
Rats, I think it happens in X-Men #202 Endangered Species and just happens that is not a book I own. 201, check. 203. Yup. No 202. Anyway...maybe it was a sleight of hand?
If it was drawn by Ramos or Bachalo it's anyone's guess what is going on at any particular time because the art is just so nonsensical and horrendous.
Remy got back missed part of brain by Sinister. Probably got completely un-lobotomized by Faiza in Gambit #17 but it never was used later or explained. Because no writer cared.
Asmus was hobbled, not allowed to have Gambit do anything, interact with anyone, or become too interesting lest it have any impact at all in the rest of the universe. It was left vague just what G was capable of.
Is it too much to hope that Gambit would be involved in Inferno? Wishful thinking, considering the author. But if it involves Mystique, the Diaries, Destiny and Sinister...
Sinister is cooking up babies over in Hellions. He and Destiny had worked together on Black Womb. The Inferno arc, at least the 80s version, had to do with babies. The upcoming one has a baby in the teaser art. C'mon, man. Mystique and Gambit team-up round two! What could possibly go wrong?