Hmmm. I had one late last year where both front spindles were bent nearly u shape and the front axle twisted. Just don't know if it was the falling off the back of pickup while going down the highway had anything to do with it or not. Axle was available but spindles weren't. Just told go buy another used mower.
If it works...yes. It's a fast & free fix which doesn't require a welder, angle grinder, bench vise, tap & dies, etc. A lot of people don't have specialty tools, but a pipe & a big pipe wrench are pretty common. If you have the time, money, & knowledge to do a professional job then knock yourself out. The rest of us are happy with a fast & cheap fix that works & requires minimal tools.
The problem comes if the "fix" weakens the parts to the point they bend worse and it becomes a warranty repair at cost to me