Lazarus Larkin
You can call me whatever names you want. It turns my stomach and I don't want to see it.
Just because you don't like it doesn't automatically make it against the TOS. Swearing isn't against the TOS/Rules and Regulations, but I've seen dozens of people on Gaia who are very offended by cussing.
The reason only some of the images you reported are removed is because each mod has his or own view of what is "excessive gore", which is actually part Rules and Regulations, not Terms of Service. Some mods are lenient, some may hate gore as much as you do. May I note that the rules state "excessive gore" and not "any gore". Some blood and guts is still allowed.
If you're so revolted, you have the option to off signature images, just like people who dislike cussing can turn their filters up to the max.
Gaia is PG-13, The Walking Dead is rated TV-14, and the gore the items Gaia made for the sponsor are not even at the gore level of the actual show. Just thought I'd mention that.