What I took away from the Kinabatangan and indeed much of Sabah was wildlife on the edge. Both in terms of their existence and literally - living on the edge of plantations.
I agree, but compare that to, say, Vietnam where wildlife is off the edge, ie it's mostly all gone.
Kinabatangan is a special case. It should be viewed as a partial success. At some points the forest is literally tens of metres wide between the river and the plantations,
but it's still there. This is a legal and institutional victory, because protection has worked. It's not like the usual parks, where you get concentric rings of increasingly protected vegetation and land around a central core of ancient rain forest. What it actually is is a wildlife and forest corridor that protects the Kinabatangan ecosystem (we will both have seen the rope bridges the cross side creeks, allowing the contiguity of this area).
Certainly, extreme encroachment on wild places something I've seen again and again in my travels around the world (most of Southeast Asia isn't much different and i've since seen the mountain gorillas definitely have it just as bad), but, just in terms of where I had been at that point in my life: it was Sabah that gave me my biggest shock. Even if you theoretically protect these corridors and small reserves of forest and find some magical way to contain the animals within them, their accessibility becomes an issue. I certainly had little difficulties finding wild elephants and orang-utans. And if I can, so can anyone.
So I think it's worth cautiously pointing out that in Sabah these corridors and reserves
are protected. Otherwise they probably wouldn't be there. Sabah actually has 50% forest cover, which the local government has committed to maintaining. Now much of that is for sustainable logging rather than totally protected. There are issue with this; although sustainably logged forest can support many (most?) species, the lack of ancient trees is an issue for nesting hornbills for example. However, these are solvable issues.
Again, it's worth pointing out that the Kinabatangan is unusual. If you go to somewhere like Danum you see a different, and more normal, picture. (it also doesn't help that the drive from KK to the Kinabatangan is so depressing in terms of seeing so many oil palms.
To answer your earlier question
@Coelacanth18 , probably what I'd like to see is more corridors linking remaining forest islands, expansion of existing fragmented forest patches and larger buffer zones for critical places of habitat.
I totally agree.