Most people have bad battery life with framework 13" laptop. That’s well known. This also shows that: What is the battery life of your Framework Laptop? - #4 by A_A
I would also like to see, what your workload is, if you could last 10h with 71Wh battery.
Linux is fine, but im not using linux and most other users also dont use it. Even if it’s more used in the framework community. But framework laptop is really not known for good battery life.