The question is not whether the system is designed that way; it is whether it is tenable in the 21st century to have a Senate dominated by overwhelmingly small White states, a Supreme Court that is entirely untethered to popular will and a president without a popular majority.
I would support electing the President by popular vote, but I disagree that the method of electing Senators should be changed. Small states do need some ability to put a the brake on types of legislation.