Yes, that is the way most of them are made today.

The question of how to, without furnace and anvil, or heat treatment facilities, is what that particular article (the original reference) is about. And unquestionably, one can make a sword that way. It is a less than optimal way to do it, but a way that can be done with little investment in tools and equipment.

"The $50 Knife Shop" by Wayne Goddard is another reference I would recommend. Also the books by Jim Hrisoulas. "Step by Step Knife Making, You Can Do It", by David Boye is also a good one.