Come on, the Purism people have put up a huge effort. You can't just casually the product "massively underwhelming" without stating your reasons for doing so.
Well.. The CPU is multiple generations behind anything else on the market. Power management is basically non existent. They've only recently managed to get cameras working sorta, but not really. It was sold as a customer device, not a damn development platform. They started crowd funding in 2017, and so far have only delivered less than two months worth of devices to customers. Purism is violating the law on a daily basis.
Yes, the CPU is weak, suspend-to-RAM hasn't yet been added to the mainline Linux driver for the i.MX 8M, camera auto-focus doesn't yet work, and lot of work is needed for full functionality of the Megapixels camera app and use of an OpenPGP smartcard, but you are ignoring all the progress that has been made. Purism started with a new chip that didn't yet have good mainline Linux support and had to make several hundred commits to mainline Linux to support half a dozen new chips. Purism created a new mobile environment for Linux, which 65% of PinePhone users say in a poll is their favorite interface. Purism created the first free/open hardware phone since the Golden Delicious GTA04 in 2014 and manufactured the first phone in the US since the Motorola Moto X in 2013. The Librem 5 contains 6 innovations in the mobile phone industry, which is more innovations than any phone since the Samsung Galaxy S5 released in 2014. This is the first phone ever produced where the manufacturer promises lifetime software updates and the processor will be produced by the manufacturer (NXP) until at least Jan. 2033.