In California, there are over 500,000 people per electoral college vote. in Wyoming, there are over 140,000 people per electoral college vote. That is a pretty massive difference in voting power. Voters are marginalized in the more populated states, even with the big chunk of electoral college votes they get.
That being said, I totally agree the winner take all system is dumb. But if you really want to give everyone a say, get rid of the electoral college all together and of with a popular vote system. Of course, that will dramatically increase the voting power of certain states, because certain states have way more people.