I don't see, where I did this. I clearly stated that I eat meat and I know that this means animal suffering. It is all about the relative suffering to me aka avoiding unnecessary suffering or finding better ways (simulations) wherever possible.
"but I am certain that this is a long long /long/ way from the worst example of this. "
And there surely are worse examples. So what? This is about this concrete example. Unnecessary animal suffering to meet some arbitary deadlines. Not to save the world from a pandemic or alike.
"This research has a very high expected return, and it can't be done in simpler organisms."
My question would be, why not use humans? At what point would the "very high expected return" justify this? Never? Why not?
Apes are indeed quite close to us (so are pigs) and I think drawing a line along "with that species really anything is allowed as they cannot speak" to "they can speak, we have to take every caution with them" is just strange to me, or rather plain wrong.
So to be clear, I never said animal testing is never allright. But I do think the reasoning of "anything is allowed with animals" is very wrong.