Of course there is some vulnerability and helplessness. I'm not stupid, unobservant, or made of stone.
However humans also have agency, rational minds, the ability to make decisions for themselves.
Very reductively, right-wing politics starts from a presumption of human agency and rationality, except in pretty extreme/dire/unfortunate circumstances, and tends to work on the assumption that the good society is best effected by giving these inborn traits as much room to develop as possible.
Left-wing politics seems to start from a presumption of general human irrationality, helplessness and irrationality, and tends to work on the assumption that the good society is best effected by keeping these inborn traits in check and putting structures in place to ensure the good life happens.
I'm not a libertarian and it's obvious that some have more agency than others, by accidents of birth/natural intelligence etc. Hence of course there need to be some structures in place to plan for the worst while hoping for the best. Where I do diverge from the left-wing vision, though, is on the appropriate reach and extent of those structures. In my view, beyond a certain point they train people to greater helplessness than would naturally be the case, and actually perpetuate the situations they claim to try and ameliorate. That desire, common in right-wing politics, to lighten the structures that it is believed are deadening humans' natural resilience and abilities, is commonly interpreted as callous and lacking in compassion for the vulnerable. In fact, from a right-wing philosophical standpoint, it's respectful of individual autonomy, fundamentally hopeful about human potential - but founded in a different vision of what humans are and what human society is capable of.
I'm sure someone will be along shortly to take an extreme example of welfare bureaucracy reform having an appalling effect on an individual, and compare this sneeringly to my explanation above of the philosophy behind shrinking the state. I've no doubt there are instances of great suffering caused by changes in this bureaucracy and am not trying to claim that the current government is perfect. What I am trying to do though is show two different philosophies, and offer a different perspective on the one that the OP wrote off as the simple absence of a moral compass.