~snip~
Have those people you spoke to registered to vote? I don't know how it is in your country, in my country you don't have to register, but in the USA you do. If you don't register in advance you can't vote on election day. Anyway, as you say, their vote doesn't seem to make any difference as they are not in a swing state, that's why I was wondering. I think in that same situation of doubt I probably wouldn't even register. Just as I think that in the main battleground states the register vote will be at an all-time high.
The thing is that if many people start thinking that their vote doesn't matter, then it actually matters.
In an ideal world, everyone would cast their vote, and the president will be elected from that.
But in the US there is a lot of people that don't vote, and there might be an incentive to do so from certain political parties.
In my country it is also necessary to register before election day is held it has become a requirement for every citizen who wants to vote, because if it is not like that there will be a lot of data manipulation and also immigrants who can enter to vote carelessly.
Of course, the voice of each person is very important, especially in a country that runs a democratic system, so everyone has the right to vote that cannot be represented to anyone and it is something that must be realized, because one vote can give victory to one candidate in taking care of the country in the future, in short, we give a mandate to the president we choose to take care of the future of the country.
I call it abstention, this person can indeed be motivated by thinking their vote is not important, hesitant, busy, lazy to deal with politics, skeptical, do not care at all not because there is an incentive.