So because Fallout has SCIENCE! it means that logic and consistency should be thrown out the window?
The clones in the vault shows that it was a failure, and that it was continued in a Vault of all places (just like FEV was) it means that it must have been something they had yet to perfect, this means that the technology to successful cloning has to be limited if not not exclusionary to that vault. It's about context, vaults are primarily social experiments and control vaults so for one to be remade into a biological experimentation vault means that whatever is studied down there is not perfected and it's so important that they'd contract Vault Tec to change their design plans for a vault solely for that experiment. Comparing it to the FEV experimentation in V87, with the only other locations being Mariposa and West-Tek, it means that cloning technology is limited to be put into such high priority. But even 'then' it was a failure as it shows with how bat[censored] crazy the Gary clones turned out to be. Hell the vault deteriorated and is rusting apart, any tech that could have been useful is badly damaged and whatever research data was left has withered away with the years.
I don't mind cloning, I don't. But what I do mind is when something is just thrown in there for the hell of it. And what I do mind is when lore is [censored] over just so we can have "cool things". Vaults are 'not' biological/biochemical experimentation vaults, that we even had 2 is pushing the limit, and that Obsidian thought it'd be a good idea to have plant zombies in another is closing the breaking point.
It's not about that "I" don't like it, it's about that the lore says that vaults are X, not Y and what you're suggesting is that we should throw lore out the window cause Y is more fun. I actually want the lore to be enforced and vaults have no business being anything but 'social' experiments. The other experiments? FEV testing? Slicing tech? Holograph soldiers? Insta-refinable resources? Those take place at military facilities such as Mariposa and Big Mountain. Because those are military facilities designed for whatever testing they are meant to perform. Vaults aren't. Unless I'm remembering it completely wrong the 87 Vault had to be refitted when the military contracted it.
Laser weapons, cyber technology and brain transplants are things that were developed and polished 'before' the war. Cloning didn't start it's research until very close to the war, if it didn't they wouldn't have needed to contract Vault Tec for another vault to use, so since this research was relatively new it means that they most probably did not have tons of cloning facilities set up as they hadn't even perfected it yet. It's the same reason for why FEV was only in 3 locations, it's original design took place in West-Tek then when they realized it's potential the military set up a facility specifically designed for FEV research at Mariposa and even then for good measure they wanted to make sure the experimentation continued so they made a deal with Vault Tec to refit a vault for their experimentation needs. Does cloning exist elsewhere? Sure, I think it's feasible that it ought to exist in one or two locations at most bar the vault just like FEV did. But do I think that after 204+ years there are resources left? No. Do I think that the facility is still operational after centuries of neglect? No. Do I think that anyone in the right mindset would waste a crapload of bio resources to un-extinct horses? No. And finally, is it likely that whatever facilities were above ground was hit by a nuke like West-Tek and Big Mountain was? I find it highly probable.
To me, with all these things considered, cloning is very limited, maybe even exclusive to that vault, it does not exist everywhere.
And vaults? They are meant for social experiments, and while having to live with several hundred animals might be considered a social experiment fact is that most vaults fall apart so what would make this one more special than the others, and more importantly; Why is it necessary to have an 'ark' vault anyway if the sole purpose for it is to shoehorn in an animal into the Fallout games? And how long do you think that the animals in this ark vault will survive being closed in for 204+ years? They wouldn't even be able to function outside because they never adapted to the wasteland.