Using the same template 500 times is not programming.
Yes, we know why you find it difficult. That's not a measure of what others can do.
Actually, I sell far more Ademco Vista-20P systems than all Napco panels combined. That's because many people come to my website looking specifically for that panel, having received bids from local alarm companies seling that product.
Yeah, sure. You spend more time riding your bicycle than programming Napco.
I was already installing and programming security systems when you were in grade school. I chose to program Napco by PC long before most dealers had computers. When decent laptops became available, I bought one for myself and one for each of my installers because you're far less likely to make a mistake programming an advanced panel by PC than by keypad. I teach DIYers to do it that way for the same reason.
Ademco has an advantage in this area. It's easier to program the Vista series panels by keypad than Napco.