There is a significant Russian minority in Estonia (as in other Baltics) who after de-russification remain "second class" citizens (without the right to vote for example).
That is Russian propaganda, Estonian citizens all have the right to vote. There is a minority of Russians here who do not want to learn the language and become citizens, hence they can't vote. They have the attitude that we (Estonians) are occupying their land... it's crazy. Younger generation of Russians who are born here are mostly not like that though
*edit
Even non-citizen Russians have the right to vote in local elections, just not in nation wide elections.
Also, I suppose war simply has a cost, sanctions and so on can simply be factored into the calculation. It's not a Russian mindset, it is rational.