Absolutely yes. 
I could not agree more.
You could also have used a pantograph or any of several other methods too.
However I maintain that they are all band-aids that cover it over and don't really address the underlying problem at its source.
Driving the two lead screws from a single motor, by whatever method you wish to use, does address the underlying problem and fix it.
Similarly, the Y axis really needs to be driven from a single motor, or the two need to be sync'd together, although it is much less of an issue than on the Z axis.
I recently had an odd thing happen with my printer that underscores this (for me at least).
The left Y motor's pulley came off in the middle of a 10+ hour print.
The wimpy little set screws loosened to the point that the pulley walked itself completely off the motor shaft.
So somewhere around hour eight or so the Y carriage became driven by the right motor only.
Guess what- the print continued on without incident.
In fact if anything the print quality was a little better, and it was definitely quieter.
That just reinforces my resolve to convert it to an H drive or CoreXY.
That way the two motors will not be fighting one another at their pole positions or need to be mechanically synchronized in any manner.
Or I could just convert to a single motor using a jack shaft as others have done.
Regardless, there is a single Y motor conversion (or equivalent) in my printer's future for sure.
There are indeed many ways to skin a cat and one size does not fit all..........
