The program didn't end even for people who found a job. That's the difference between UBI and regular unemployment benefits.
But I agree with you - there will still be work available in an automated society.
Doesn't that require far greater wealth distribution. Currently people mostly work for companies which make their capitalist owners rich. If the companies ditch workers and use robots then in order for the workers to also be employed the money from those owners needs to be spent on other things - the unemployed workers don't have money other than what they're spending with the pre-existing companies for food/clothing/housing and such.
Those currently earning off others labour will increase their take of profits; by what mechanism will that additional proportion of the wealth be made available for new industries. What industries will move the wealth from the Uber rich and distribute it, they're going to need to be large employers of many low-skilled workers.
I don't see how this can happen without a revolution such as UBI or a cultural shift to a communistic system, say, that can democratise the profits from robotisation.
Yes, the industrial revolution freed workers to take up new roles, but the lower population and higher availability of easily acquired resources fed in to that. The world is different now, I don't see the same happening again, the maths of that doesn't add up.
my issue with the UBI fascination is that too many automatically assume there won't be work in a highly automated world or that costs of living won't decrease sufficiently as well. where it ends up is still unknown