Shelly is proud of their devices being:
- No hub neeeded
- Not required to be online
- Compatible all major hubs if you do want to connect them.
I do not work for Shelly. I just really like how I don't have to use an app for them and they're compatible with seemingly everything. I've bought the devices and I can do what I want with them.
I had owned two of their smart plugs for a couple of years and they decided to stop responding to resetting and could talk to them. Shelly support sent out two new plugs for me and asked for the defective ones back so they could troubleshoot them. Great service.
Just seems that privacy-centric people should be using privacy focused devices.
They are headquartered in Germany so very unlikely they'll go back on their offline compatibility anytime soon.
It certainly could be an issue, but I have 6 installed in my home and WiFi can still go over 200 Mbps. Maybe it could go higher, but I don't need that.
For me at least, it's not about speeds, but stability. Prior to installing relays, smart switches and whatnot in my house I could stream games from my PC to my phone/laptop flawlessly, but after installing them all it's completely unplayable due to stutters and latency. Download speeds are more or less the same though
Ultimately whether it matters will depend on your use case, like most things
The only streaming device that I use in that context is PS5, and it works the same as before. Lucky me!