What are the biggest benefits of Homebridge?
I don't have any scenes except lights, which are all HomeKit compatible. Is the benefit that you can buy non-HomeKit accessories (for less money) and talk to them through Siri like they were HomeKit compatible?
I do have some older Wemo switches/plugs that are no longer supported by Wemo, so if I could get control of those, that would be helpful. For now, they're just fixed to the timer schedule I set before Belkin sunsetted Wemo.
The key difference between what you're doing and what Homebridge enables is to make the relevant app the "Home" app. If all of my IoT devices are controllable (and can be automated to some degree) through a single pane of glass that I can share with my wife, that's a big improvement over "Ok, to get access to our cameras, you need to go install these three apps and log in to all of them and accept my sharing invite, etc, etc".
Yeah, you can talk to Siri to control the devices sometimes, but that is at the very very bottom of my list of benefits. I want the app UI specifically, and Homebridge enables that. (one concrete example: Ring doorbells don't play nicely with Homekit on their own, but you can install a Homebridge extension and then your doorbell camera shows up as a Homekit-compatible camera in the Home app).