So... if you purposefully sacrifice something precious and meaningful to you in order to avoid a situation you don't want to be in, that's not a loss? You have some strange definitions of loss.
Indeed, it's not a loss. It's a decision to take a risk because you don't want to take another risk. At that time she had sacrificed safety of food and had decided her mother betrayed her, and had won freedom. It's not a loss.
And LQ wasn't even the equivalent of a commoner for most of her late childhood, so what's your point about the Chu?
If you can't see the difference between a clan being slaughtered and having to run away from home, your protagonist-centred morality is deep.
Now, the big thing about Chu Song is that it was 150~ years ago, so she probably only have her parents/grandparents personally living this. However, do
not under-estimate growing up with your parents telling you about how they got their hands and feet cut off by the duchess, and how they destroyed everything that was rightfully yours.
Turned into common soldiery, still leagues above most. So yeah middle class.
Yeah, I am sorry. When half the thread regularly make the argument barronial clans are lower class in this setting, being cannon fodder is not 'middle class'.
Li Suyin's maternal grandfather (or great-grandfather, not sure) was also crippled, his family destroyed. And not only did he land at the upper edge of mortal society (Li Suyin's father can actually pay for her to be at the sect) he also got to keep some fraction of the family techniques alive.
There are commoners and there are commoners. Street rat tier is way below regular tier, and regular tier is way below former noble.
You yourself said it was Li Suyin's father who was rich enough to pay for the sect, and it was her maternal grandfather who got his dantian crippled. Is your argument now that Chu Song's family married into a powerful mortal family and thus got better?
The ridiculousness of how much bending over to give special status to the protagonist is ridiculous here. Getting your family slaughtered is
not in the same magnitude of loss as "running away from home". The latter arguably means you have more material suffering, but even then that's a huge assumption.