It's not an "attitude", it's a fact of life. In order for you to eat, a certain amount of work has to be done. Why should someone else do it if you're perfectly capable? We've already made it a lot easier for you by having a huge economy where you can do all sorts of things that can be traded for food, instead of having to grow all your own food yourself.

The attitude that really needs to be confronted is that the amount of work that needs to be done by some human in order for that human to eat is fixed. It isn't; technology can reduce it. (And in fact it already has, by quite a lot; that's why only about one in twenty people has to work at growing food today, compared with about 19 in 20 a couple of centuries ago.) But there are huge political barriers to technology reducing it further: governments meddle in all kinds of ways that artificially inflate the cost of getting enough food and other necessities. What we really need to do is stop doing that, so entrepreneurs like Sam Altman can use technology to make necessities so cheap that nobody will have to worry about UBI, because anyone who isn't actually disabled or otherwise incapable will be able to earn a living.