What is really needed is interoperation. Does this product (goTenna) interoperate with other LoRa products - at all levels?
Without interoperation and with a relatively short range, many people can end up with useless islands of non-communication - and the cost of the device is not so low that you wouldn’t care.
I suppose no irony is intended that the product only works with iOS and Android. 
Does it have a public API so that someone could more readily use it from a Librem 5? The underlying Bluetooth should be OK but the stuff on top of that is the question.
One thing that seemed to be missing is a dedicated stationary model. (I see that in my part of the world a few people are operating stationary relays but I don’t know what hardware they have.)