None of the things you listed are inconsistencies. “Dont eat animals, don’t support the harm of animals.”
Yes it is, why is your line animals? Why are oysters so obviously worthy of life but not complex plants and fungus? Vegans claim that just because an creatures nervous system is arranged different, it doesn’t mean that it’s not worthy of life. Why does this not extend to complex plants and fungi?
I have, they are capable of feeling pain and possess reasonable intelligence. I just don’t consider them sapient in a way that matters. If you cut off a chicken’s head, it will still act like a chicken. This implies that most of what a chicken feels mentally is instinctual. If you cut off my head and I came into work the next day acting normal, it would raise serious questions about the nature of human consciousness. Poultry shouldn’t suffer unnecessarily, but I doubt it has much sapience. Thus a gray area depending on how you judge their intelligence and your own morals.
Vegans always say that but not a single person has ever responded to that point in my 6 years of making it. If you disagree, do what the vegans I’ve talked with failed to do and address it please.
You shouldn’t eat octopus. Everything I said about poultry applies 3 fold to fish. Less capacity to feel pain and less sapience. I don’t consider a creature that acts entirely on instinct to have any right to life.