The actual problem with Estonians in Russia/USSR is that for a long time the Soviets would not let them go home.
Anyway, if the Russians were to expel some ethnicity today I doubt anyone would complain - about them being expelled at least. Unless these are universally unwanted peoples (you know what I mean) being pushed into someplace that doesnt want them. Like the stunt Byelorussia pulled last year on the Poles.
When the USA acquired the Southwest after the Mexican-American war there were almost no problems with the Spaniards and Mexicans who decided to stay, there was no need for expulsion.
Still awaiting for someone here to post news articles showing the majority of Russians in Estonia are gonna overthrow the government.
Or is the Estonian government pulling a “January 6th insurrection” lie?