Keeping people warm is the only problem to solve in Siberian winter. Humanity solved it thousands of years ago.

Antarctica is cold year around, lacks food, lacks sun light for half a year. Almost no one wants to live permanently in Antarctica.

Mars has all of the Antarctica problems, almost zero sun light, lack of air, lack of water, radiation, toxic soil, low gravity, extreme remoteness.

It may be theoretically possible for a colony on Mars to survive, but it remains to be seen if enough people would do it in practice.