Short answers, pulled from the story.
The 1989 Australian study claimed there is hardly a medal winner at those games who is not on one sort of drug or another. The study described the Moscow Games as potentially better called the Chemists' Games.
Richard McLaren published a 97-page report on the 18th of July 2016 covering significant state-sponsored doping. The investigation found evidence beyond reasonable doubt that the Ministry of Sport and Federal Security Service operated a failsafe system.
WADA banned Russia from major international sporting events for four years on the 9th of December 2019. Charges included tampering with doping-related reports and obstruction of investigations.
Curler Aleksandr Krushelnitckii won bronze but was disqualified while bobsleigh pilot Nadezhda Sergeeva finished twelfth and was also disqualified. Two Russian competitors from the OAR delegation failed doping tests during the Pyeongchang Winter Olympics in February 2018.
Her sample taken at the 2022 Russian Figure Skating Championships on the 25th of December was not analyzed until the 8th of February. Her gold medal in the team event remained under consideration pending further legal consultation.