it’s a strong moral argument.
It seems to me there are times, (only in business maybe?) when people are required to vote certain ways, whatever their belief. That may apply to Electors. It may require state laws to enforce. Whether the punishment could include negation and removal I’m not so sure now.
I’ve had to face that it is ‘good’ practice to assume when the Constitution is specific - “appoint”- about a power it rules out other powers- “remove”.
Perhaps the Parties should require Electors to give them blackmailable evidence as a requirement for the office...
During primaries, delegates to the party nominating conventions are required to vote a certain way in the first round, but that is by party rule. The punishment is to be expelled from the convention and replaced by an alternate. Note that primaries are not Constitutional processes.
One could argue that "vote" is another of those terms in the Constitution that is not defined because everyone knows what voting is. Electors voting is in the Constitution, so via Article VI it is supreme Law of the Land. There is no federal or state law that can control a Constitutional power to vote. The vote-holder, in this case the Elector, has supreme power over how to vote.
As I posted earlier, the way for states to control influence an Elector's vote is to use their supreme power to choose the method of selecting Electors in such a way that produces Electors that are very highly likely to vote a desired way. That's what they do now with winner-take-all competing slates of party Electors, but the Electors still retain the power to become faithless.
-PJ