They appear to be saying that the Glowforge uses only this band (hence: exclusively) and not many other devices use it exclusively, therefore, your other devices on other bands may not have a WiFi issue but your GF is.
Then it isn’t clear. See, I understand what it’s trying to say, but it’s not what it’s actually saying.
And I like what you wrote. It’s actually clear.
It might be just how my brain is reading it today. There’s something wrong…or maybe just awkward about it that I’m trying to put my finger on and I thought I had it with the first section but you’re right neither of what i wrote work with the latter part. It may be the “other” you added. “Many” refers to numbers, while “others” emphasizes just different ones. Or maybe it’s the structure…
Because many devices do not use this band exclusively,
Because many devices can use other WiFi bands,
Those read clearly to me and for with the latter section of the sentence. Maybe it’s finally been too long and I need to go pull a grammar book and break the sentence structure down. My brain refuses to except that’s it’s been properly constructed. I could be wrong.