A fibre optic in Russian drones. A dead end?

Information about Ukrainian interception of the FPV drone (provided on March 2, 2024 by Ukrainian military blogger Serhia "Flash", with thin fibre attached to it (wrapped on the coil), is simply a large surprise and for respective reasons. Firstly, it points out that the Russians are trying to introduce fresh solutions to unmanned systems on their own alternatively than as before, but to replicate what the Ukrainians are utilizing or are proposing in another countries.