Install Python readability
yay -S python-readability-lxml
Test output
python3 \ -m readability.readability -u \ 'https://www.servethehome.com/amd-psb-vendor-locks-epyc-cpus-for-enhanced-security-at-a-cost/' \ 2> /dev/null \ 1> output.html
In ~/.newsboat/config
set macro - french keyboard comma semicolon is practical
macro ; set browser "python3 -m readability.readability -u %u 2> /dev/null | w3m -T text/html"; open-in-browser ; set browser "w3m %u"