Trying to find an expression/idiom to match these two phrases about providing bad solutions?
So say I'm looking for an opportunity (say a job) and a friend of mine gives me an option; but their offer is horrible(say working for less than minimum wage, 80+hour weeks, no vacation, doesn't use my degree; etc.) What is a phrase or idiom for what they are doing? Where the option they provide is basically worthless?
This is known as a bad fit. This job doesn't suit you and you don't suit it.
Lowballing would simply be about the pay not being up to market value. You have raised issues that go beyond pay.
Offering someone a job that that they know to be a bad fit can been seen as predatory. It may actually be misguided charity.
Furthermore say this same friend then attacks me saying I'm too picky or something similar. Is there an idiom or phrase for when you offer somebody something worthless and then attack them when they inevitably refuse?
They likely see you as ungrateful but that's not from your perspective.
From your point of view they got your hopes up and dashed them. Then they added injury to insult by attacking you. This subverts the more typical idiom insult to injury.
None of these are perfect fits. They would not carry your exact meaning standing alone but they do capture the general mood.