Earlier quoted context omitted.
Is there any practical difference between 7 years and "lifetime" or you just want to get into a "let's see who supports FOSS more" measuring contest?
My 12+-year-old laptop is fully functioning with Debian now. It serves well till today and I don't see any reason to through it away.
Meanwhile I have a phone that is based on free software (for all the aspects where it matters) and that works. Today. And which has future potential to be just as free as the librem/pinephone - after all, if the code being developed by Purism is free, it can be adopted by other vendors.
A laptop from 12 years ago more likely than not has less memory than a mid-range phone from today, and unless such laptop is your only device for all this time, it has no point in this conversation.