Time to change that, then. She insisted on using both surnames and strongly emphasized her Polish roots throughout her life. Erasing her Polish maiden name clashes with her wishes and is only possible, because due to historical circumstances Poland had very limited impact on global popular culture.
>strongly emphasized her Polish roots throughout her life
and named the first element she discovered - Polonium - after her homeland.
And in Russian space she is Мария Склодовская-Кюри (Maria Skłodowska-Curie) too (that was on her portrait in our chemistry class back in 198x for example).