You are not the only one. However I don't think security is even a relevant concern, because there is one much more fundamental flaw in all electronic voting systems:

The goal of voting is to produce agreeable consent — so it doesn't really matter how you organise voting, as long as everybody afterwards can agree who won, who lost and by how much.

So phrased differently, one of the most important properties of any voting systems is that people afterwards can't just call the result into question. This can only be true if most people voting understand the mechanism, can verify it themselves and manipulation on big scales is hard.

This is why I think any electronic voting system is problematic. Even a total expert would have a hard time proving that one machine worked as it should on election day. If you then have some Autocrat who raises doubt about the election result whom do you trust? That expert who tells you that manipulation was mathematically impossible or that autocrat whose party you vote?