Despite the divisive opinions, Moffat seemed to be frequently paired with the Master, Davies with the Daleks, and Chibnall with the Cybermen.

Source: https://screenrant.com/doctor-who-villains-daleks-cybermen-master-debate-era/

Gold is lethal to the Cybermen, which is why they tried to destroy Voga, the planet of gold in "Revenge of the Cybermen" and why the Fifth Doctor (Peter Davison) used Adric's gold badge for mathematical excellence to kill a Cyberman in "Earthshock".

Source: https://screenrant.com/doctor-who-season-14-rtd-clues-meaning-tigella-kingdom-gold/

Gold is lethal to the Cybermen, which is why they tried to destroy Voga, the planet of gold in "Revenge of the Cybermen" and why the Fifth Doctor (Peter Davison) used Adric's gold badge for mathematical excellence to kill a Cyberman in "Earthshock".

Source: https://screenrant.com/doctor-who-season-14-rtd-clues-meaning-tigella-kingdom-gold/

The episode ends with the visual of a single tear falling from the empty eye socket of Bill’s Cyberman form — a chilling reminder that each and every one of the Cybermen were once human beings.

Source: https://gamerant.com/doctor-who-episode-saved-cybermen/

To the Cybermen, sacrificing individuality for immortality is an upgrade, and they wish to share their gift with the rest of humanity — whether they want it or not.

Source: https://gamerant.com/doctor-who-episode-saved-cybermen/

Will these cheeky rascals rank as high as the Daleks or the Cybermen in a fan’s list of top monsters?

Source: https://www.walesonline.co.uk/lifestyle/tv/watched-doctor-who-christmas-special-28321404