This is not difficult to understand per se 
, the problem is just that this is basically all we have to go by.
The information I’ve gotten from purism usually turns out to be wrong when it comes to shipping dates, which is to be expected for a project of this size. But currently though, it has come to the point where it’s become laughable. When I (and i guess the same is true for many other backers) ordered this phone, it was to be the first fully free gnu/linux smartphone, made for consumers to be repairable etc. that’s still a great goal, except it’s hard not to compare it with things like the pinephone, which has beaten the librem 5 at (almost) every front, most notably in terms of availability. It’s a phone you can actually buy and receive.
I wouldn’t want one of those, because of it’s lack of focus on software freedom (I still love the project for what it is), but it kind of makes it apparent that purism just bit of way more than they could chew. The preorder date was literal years ago now, and we are almost at a point now where even though purism works on the software, the librem 5 in itself isn’t going to shape the market for mobile linux software as much as it’s alternatives already are. Purism has created a great set of tools that are already actively in use, but it’s starting to look like they’ve produced too little too late when it comes to the hardware 
/rant apologies for this entire thing in advance. I’ll get over the disapointment of seeing these numbers in a day or so.