The situation is a lot more nuanced for me: yes, the people doing the renting do have some responsibility for this, but:
1) I don't see responsibility-shifting as justification for scummy business practices. If what you do as a business is fundamentally scummy (even if legal) then you're a scumbag, period, and deserve to be called out and taunted (and, if it were up to me, regulated out of business). The people running these rent-to-own companies (like most payday loan places, underhanded adware software pushers, etc) are scumbags and I wish the worst kind of bad karma on them, though sadly I don't actually believe in karma.
2) I don't fully understand how someone could have a total lack of empathy for the renters here, though I'm not surprised to see it. If this were a story about some startup founder who just as stupidly maxed all of his personal credit on some startup (ignoring the obvious math of how likely he is to fail, not entirely different from how some are blaming these renters for ignoring the math), there would be a lot more sympathy here, I think, due to relatability (mere exposure effect).
Bad decisions are not something only poor people make, they just happen to pay a much higher (normalized) price for bad financial decisions than the rest of us because they are already so close to having nothing.