Playing on the rail tracks also incurs incredible personal risk -- doesn't make it wise. Seems fair to me for the author to give their opinion that they don't believe this to be an effective form of protest. Especially given that they list their specific concerns.
True - and I hope I didn't give the impression that drone operators aren't taking significant personal risk, but compared to the alternatives for short range indirect fire (mortars) it seems like these systems should be less vulnerable?
FPVs don't seem anti-tank replacement -- they do seem to have a role against soft targets ie against massing infantry, c2 nodes or suppression of enemy mortars. In this role, from a distance, they seem harder to suppress than the alternative, ie mortars.
Also these are immature tech... I suspect at least some of the issues identified will be mitigated in time.