Yes, fibre broadband is more environmentally friendly than standard broadband. Fibre optic cables use less energy to transmit data than copper cables used for standard broadband, and their production emits less CO2 than copper cables.
Fibre optic cables can also be reused and recycled into new cables, while copper mining is harmful to the environment and difficult to recycle. Finally, fibre optic cables are easier to maintain and less susceptible to damage than their copper counterparts.