I think many of these takes come from a disability-adjacent place. But I actually disagree with this sentiment.
UBI is universalbasic income. It is a lowest common denominator. People with disabilities need more resources than the basic minimum; in a world with UBI, I don't think disability grants, supports, or stipends should cease to exist. Relying on UBI as the sole support of disability, whether short or long-term, isn't enough. We must demand more.