Yes, "linux-firmware" is the way to do it -- however Qualcomm is currently NOT doing it for all their Snapdragon Elite firmware (as per the linked article). This is on their TODO list.

Tangentially related but I wish we had something similar to LVFS but for IoT devices.

That way, you would only need to have one hub (Homey, Home Assistant, IKEA, Apple TV, etc.) and it would be able to keep all your stuff up to date and control everything via Matter. Right now, we are slowly moving towards a future where any hub can control any device, but you still need to run the vendor hub if you want firmware updates.