I think Panic nailed it!
Personally, all my tractors from the 30's, 40's, and 50's are still original, because it works. So is my 1960's truck.
The only electronic conversion I ever had done was to a very difficult to start pull start lawn-mower. And I didn't do it, the service person did.
After the conversion that thing started on half a pull! Until it didn't start, and it didn't start, and it didn't start, and it is now someone else's problem.
I don't remember what brand it was, and don't care. It worked, until it didn't work.
Lots of folks swear by the conversion, and I have no reason to doubt these folks have had good luck.
Being in the carburetor business; if I could have a dollar for every "carburetor problem" I have solved with points and condenser, I could buy Hawaii (well, close to it), and retire!

We get the folks that DO have problems with the conversion, but don't know it. These folks swear AT the conversion, after the points and condenser fixes the problem.
For those in love with the electronic whiz-bangs, I would suggest one thing.
If installing on a vehicle with a generator ALWAYS upgrade to an alternator! Jon