There is value creation, and then there is rent seeking. The OP is proposing that the philosophical justifications of a UBI are based on the ever increasing amounts of rent seeking behavior that underpins our economy.

One example, intellectual property constraints are perpetually expanding due to an increasing number of patents, copyrights and trademarks. If you are a creative person, you are legally required to navigate this intellectual property minefield in order to make a living. Why shouldn't you get some sort of token compensation for the loss of creative rights?

Another example, I like to fish. But I am required by government regulation to pay for a permit and to limit my fishing activity to comply with regulations. The regulations are burdensome enough where it would be prohibitive to sustain my family solely on my fishing labor. This was not the case about a hundred years ago (roughly). One could sustain a family through fishing alone. I could try and go the commercial route, but that requires an investment of upwards of $100k and that industry is notoriously hostile to new entrants and extremely volatile (read up on snow crabs for example). So for all intents and purposes, this natural resource is no longer available to me to use as a primary source of sustenance. Why shouldn't I expect some sort of compensation for that?

And of course the big one, land rights. We give landowners perpetual rights to use a piece a land as long as they pay their taxes and comply with local zoning regulations. That land is not theirs. It existed long before they were born, and will continue to exist long after they are gone. But while they "own" that land, I am forbidden from using it. And there are fewer and fewer places in the world where land is free/cheap, and also somewhat economically useful. At some point in the future (if not already) we should expect that type of land to disappear entirely as capitalism continues gobble up all available opportunities. UBI feels like a natural way to compensate individuals for the loss of rights to this land.

Historically, citizens of modern well functioning democracies have considered the right to vote as sufficient "compensation" for the loss of certain natural rights. The right to vote is certainly a powerful and necessary right. But I think UBI is a more natural compensation for the increasing economic constraints that modern society imposes on its citizens. Fishing regulations help prevent fish stocks from collapsing, intellectual property rights allow creators to profit from their work, etc..., but these restrictions also narrow the legal space in which current and future citizens can make a living. Do we really need more and more people releasing shit coins and NFTs in order to squeak out a living? Do we really need more people optimizing facebook ad conversions? Maybe we just acknowledge that the vast majority of work being done in modern societies is not essential, and forcing more people to compete in that landscape is not making the world a better place. A small UBI isn't going to dramatically change peoples motivations. Freeloaders already find ways to skate by, UBI might make it a little easier. But maybe it is better if the freeloaders just take their UBI and chill rather than try their hand at another scammy NFT project. Even with UBI, the vast majority of people will continue to work as UBI would be too small to provide a comfortable middle class lifestyle. Maybe a few people might downshift a little bit and use UBI as an opportunity to focus on things that they consider important, i.e. family, hobbies, volunteer work, etc.. But is that really so bad?