So at least in Portugal, my ISP gives me their device, it has a bridge mode, but it also serves as their wifi access point network (think Xfinity wifi) -- which I don't object to except that their wifi can't be disabled and their signal interferes with my wifi access points.
I want a dumb gpon sfp not because they won't give me a bridge, but because their bridge makes too much noise.
I have to wonder, why can't their wi-fi be disabled? Is it one of those scenarios where it is being used to support other ISP customers in your area?
My ISP (note: also owned by my employer) doesn't have this, so the modem I've got is theirs, but I can disable wi-fi. I do, too, so the only client on this thing is my firewall. I assume that everything past my firewall could potentially be hostile.
I want a dumb gpon sfp not because they won't give me a bridge, but because their bridge makes too much noise.