If you read the article you linked, the “neutralization of the IME” was attributed to the me_cleaner project and that it was disabled via the HAP bit (which is not a big deal and, these days, is the least you can do). I hope you’re aware that, despite early announcements, Purism was actually not able to neutralize the IME in the Librem 14 (it’s only disabled via that HAP bit). You should also be aware that ever since Matt DeVillier quit, Purism does not have a firmware expert. Also, in regard to coreboot on the Jasper Lake chipset (in the Librem 11), you should thank Intel as the primary contributor not anyone from Purism AFAIK.
To be clear, almost all employees who work for Purism don’t work at Purism. They are almost all employed as independent contractors (Form 990) who work remotely.
I also want to note that a lot of the issues with the Librem 14 have been due to the fact that EC firmware is tricky. Should they be applauded for developing their own EC firmware (from a base begun by System76)? Maybe. But one could argue that they are using customers as beta testers ([librem 14] how to update EC firmware to ec-2021-06-04_ef9fd3c - #3 by NineX )… and now that Matt is gone they are struggling to support that choice. Update on Librem-EC 1.12 – Purism .
P.S. Did anyone else note that Purism has deprecated their “Core Team” page??? The Core Team – Purism