If someone has managed to make your software work on 32-bit, you should accept that port as it will help ensure your software remains efficient even on 64-bit systems. After all, if every program is required to fit in 4 GB, that means the 32 GB RAM workstation you are spoiled with can run a full 8 programs on it!

This is just so fundamentally wrong that it makes the whole rest of TFA highly suspect (and yes, most of the rest of it is also pretty wrong).