Himeaimichu

It's (sadly?) not true. There might be Kisaki nude photos floating around since he was basically at every vk party and most likely fucking around for a very long time, but if so they weren't taken by Kyo. The supposed animosity is just old rumours that have stuck around for a long time but with no substance behind it, from what I gather it's greatly exaggerated and they have a cordial relationship these days.

even if gossip is a gazette rip off, is that a bad thing? no. there are infinitely worse bands to rip off of. hell, i'd kill for another band like AND that copied the early gazette era (2004-2006). that wacky, insane style of vk and riffage has long died and if another band came to pick up the mantle and continue the sound i'm all for it. but regardless of that point, there's a very thick line between influence and copypasta. i make fun of bands now and again for conspicuous similarities found in their compositions, but all music is now influenced by itself. nothing is original, especially not in visual kei. it's totally fine if gossip look up to the gazette and are influenced by them, but putting their own spin and adding themselves to it is something i expect all half decent musicians to do. the differences you bring up are valid but i feel like that's splitting hairs and an apt description of gossip is "gazette with a traditional spin".

Ah, it was meant to be inspired by British Punk. Well.. the Chorus of the song "Kill Kill" seems to be based from Emotive Hardcore, which is technically Punk (Hardcore Punk/Post hardcore mixed with Indie rock). Though it would be more of Washington DC Hardcore/Post Hardcore instead of British, but a lot of Emotive Hardcore bands are popular in Britain (I.E AFI and Aiden) so I guess there is some authentic punk influence? 
IDK, it's really not my place to judge, since I'm not really a fan of SuG, nor do I know much about them.