I wouldn't say that. In MC, his Gambit was just wallpaper; cable already had plans to save himself, the badguys already had access to the diaries when he destroyed them, and it was Mystique who offed sinister and revived Rogue. You could take Gambit out of the equation entirely and it wouldn't have changed the story a bit.
In Legacy, all he did was make card puns and get beat up. He got taken out by mooks twice and had to have his stupid ass saved by Shaw three times.
Factor in all the times gambit has been beaten up, tricked, and verbally b*tchslapped and it's well into Milligan levels of crap.
Oh yes it does. The second Gambit gets back from limbo following the utter destruction of his character, carey has him pining at Rogue's bedside, bowing and scraping for how horrible a person he is, and for three issues literally every line Gambit had(a grand total of three BTW) was about Rogue. Of course at the end of MC we see Rogue tell Gambit to **** and GTFO.
I swear, the dude hates Gambit or something.
A few. Claremont has a strong tendency to let his male characters turn into losers while the women become uber-lesbian-warrior-goddesses-of-indomitable-will-and-strength.