It's no longer a representative republic then. Right now with the electoral college each state essentially has it's own popular vote and then casts it's electoral votes based on the results. This ensures that every vote, from every state means something and not just votes from California, New York, Texas, and Florida. Given how this election was, there was a chance that Utah could have thrown a wrench into everything if they would have went with Evan McMullin. That means it's 6 electoral votes wouldn't have been cast to either Clinton or Trump and with how the election was going up until the day it happened, 6 could have been a game changer.
They can be concerned, but they should understand the system before questioning it. Most American's have a hard time understanding it and most of us have had some sort of civics education. I find it really hard to believe the most folks who live outside the US have a firm grasp on how and why we do things the way we do, same thing goes for most Americans not having a clue how things work in Europe or even Canada. If you don't live somewhere you only get bits and pieces of information and it typically comes from an extremely biased and less than factual media. Same thing goes for us here in the US. Take Brexit for example, the only thing we knew in the US was what the media portrayed and that was the vote was purely to get foreigners out of the UK and that it crashed our markets. I'm guessing that's only a small portion of what it was actually about.
Then you're not understanding the system if you think our government is making the minority more important than the majority. When you have representative government you need to represent all citizens, not just a majority of citizens.
And having less democracy isn't an issue, the US has never been a democracy and will probably never be one. We are a republic. In scaled down terms, democracies are were people decide on laws and polices directly, a republic is where elected officials decide those things. The Founding Fathers were actually afraid of democracy and
@BobK already pointed it out with his link to the "Tyranny of the Majority".
Now if the US was a democracy and we had the electoral college, then I would agree that it needs to go since it would violate the principles of what a democracy stands for, but since we are a republic we have the electoral college until someone tries to rewrite the Constitution and reform our government.