It's a trade off. I want to be able to prove that my vote was counted. How can I trust that my voice was actually heard by the system?
>as nobody else can verify what you voted for.
You can mitigate this problem by giving people a way to fake any vote outcome. The voter knows how to verify their actual vote, but someone else would not be sure if what they verified was real or fake. Also I doubt this type of buying votes with verification is that big of an actual thing. You can trivially do it with paper voting to by just asking them to stream themself voting or by taking a picture of their ballot.
>You either have to blindly trust the system
Having someone else count votes without the ability for you yourself to count votes and check to see if your vote was included is the opposite of blindly trusting the system.