It stands for the practical application of ideological principles, it’s just a shortened version of that. It should just be “helping peoole” ffs.

These are literally two different concepts. “Praxis” is the application of theory (as you say). “Helping people” is meaninglessly vague. I’m seriously confused by the argument that “praxis” is useless but “helping people” is somehow a specific, useful term.

it’s just a shortened version of that

All words are shortened versions of longer explanations, that’s why dictionaries exist.