[elif]

If your ethics is innately tied to the nuance of fringe intellectual property law in a brand new domain, it may be time to relax some things

That is to say, a lax perspective of intellectual property law can be less or more ethical than one which supports the undeterred corporate collation of powers behind those laws.

Those in control do not have a monopoly on ethical goodness.

[meowface]

In this case the potentially infringed parties would be YouTube creators, who in most cases are not corporations or backed by them.

(I myself personally happen to think it's fine to train a commercial AI on content from the internet like this, but the framing of your argument just feels misleading or even manipulative. "Copyright" -> "IP law" -> "big business" -> "bad vibes", when for cases like this the affected people are almost all small individuals and the responsible entities are almost all big corporations.)