Ukrainian Prime Minister Denys Shmyhal has said Ukraine is ready to boycott the Olympic Games in Paris if Russia and Belarus are allowed to take part in the competition.
IIRC, Russia, at least, has had to participate under a neutral flag in recent games due to their ongoing doping scandals anyway. Other than Belarus also competing under a neutral flag, what would substantially change?
it means you compete as an independent, neutral entity and not under your country’s flag so your country gets zero recognition for any achievements, only the individuals.
It reduces the prestige a nation can garner from success at the games. Think about all the soft power Russia accumulated at Sochi with their many wins thanks to their doping program.
It made Russia look powerful and resurgent to the outside world, which attracts other nations into their sphere of influence. It also is a distraction from rights abuses and political retaliation. Here’s an article about Saudi Arabia’s use of sports washing.