This seems like a fair compromise to me.
I've been using it on a Raspberry Pi to control various things and recently decided to shape it up and release it to the public.
You can access stuff remotely if you have an Apple device which is paired to the homekit stuff and connected to the internet (e.g. an Apple TV, we use an iPad which is always at home).
I've deliberately designed my system to work offline as while our connection's pretty reliable I don't see why I should need an internet connection to turn on a light! :)
I hope manufacturers see it the same way.
I don't mind devices having to be certified, I mostly want to buy hardware of the shelve anyways for safety and convenience reasons and build the controlling/automation part myself. So my biggest worries are not having a local API, data exposure and having to invest in a ecosystem and having the manufacturer brick it remotely, wasting my money.
So only the "device" part, sadly not the "controller" part. So you'll still need a iOS device to setup stuff in your house, I tried it yesterday with only my iMac to no avail.
But still it's a step in the right direction.
Not a good idea with OEMs, and that's why I believe they gave up the white flag now: no adoption.
They are either jump on the smart home bandwagon now, or never.
Most OEMs chose APP + own protocol approach