General Discussion

I don't have statistics, but I see lots of Democrats voters saying "I don't like them but at least it's not Trump", and divisions among Republican voters as well. There does seem to be a lot of people who are "forced" to vote for a party even though it's not their ideal choice. A lot of the discourse isn't about what you want, but about making sure the other party won't win. With ranked choice you could actually choose what you actually want, because there is no risk of "letting the other party win".

I’ve voted third party for President twice

And so you ended up having no say on the actual choice. I applaud your idealism, but surely you can agree most people won't entertain that because they will think it's a wasted vote. All these people would maybe vote for your third party choice if they knew their vote won't end up helping the candidate they deem the worst.

My vote for one of the major parties is also pointless, since my state leans strongly in one direction we don’t even get national campaigns, since we’re not a swing state. They also know my vote is pointless

It leans strongly on the D <-> R axis. If there were 10 other parties trying to get votes, they would campaign in your state to get them and your vote would matter. Even if the D or R is guaranteed to be above the other in your state, ranked choice would allow other parties to be above this pair, while still guaranteeing everyone's D/R choice is respected if it comes to it.