I've done it. Have a skinner I made out of an old saw blade years ago. It ain't pretty but it works. BUT.....
Saw blade steels vary greatly but mostly these days they're made from low carbon alloys or even what could be considered mild steels. The cutting is done by the carbide teeth and the rest of the blade is not great steel.
Older US manufactured blades were L6 steel or equivalent and were a bit better. Newer blades 🤷🏻‍♂️...
You can make a knife shaped object from anything the question is will it cut when you're done?
Table saw blades are a bit thin for serious knives... except as kitchen knives. They are perfect for kitchen knives depending on the steel.
The only real way to test them is to heat and quench a piece and try to break it. If it snaps off in a vice it's good, if it bends it probable won't hold an edge.
I can not recall the name of the machine (which is a shame, since I'm a machinist), but it looked like a huge hacksaw. We used it to cut all the steel that the tool room needed to make all the nice, useful stuff.
The blades looked like hacksaw blades on steroids. They were about 2ft long and cut with a row of huge carbide teeth. When the blade needed to be changed, the old one was usually snatched up and turned into a machete.
Edit: Well danged if it ain't called a power hacksaw machine.
My working Ulu was made from a saw blade. The handle is caribou bone. I have dressed quite a few deer and chopped lots of veggies with it over the last 30 years.