There are a couple of different economics with bicycle repair, and bicycle frame repair.
If you hire out the work, then things get very expensive, very quickly. So, if you have a frame worth $500 to $1000, then it may be worthwhile to get the work done.
On the other hand, if the frame is worth $100 to $300, then getting the repair work done professionally is far more marginal.
And, if the frame is worth say $50, then might as well just have a farmer stick weld it together.
On the other hand, for a home project, or hobby project, it may be a fun project to salvage something that otherwise would be headed to the scrap bin.
And, you could end up with some rather unique results. There will be some expense if you purchase replacement droputs or a donor frame.
Raleigh apparently painted the dynatech, but you could have some very unique results polishing the titanium, and perhaps the aluminum, and painting the steel.
As with many, I groan when I see really bad repairs, but also know that if I was in the middle of a tour, for example, I might sacrifice just about anything to get back on the road.