It would be more like abetting copyright infringement by making it easier for scrappers to find content to train their models on. LAION isn’t posting a single link on their twitter account for their followers. It’s clear what this dataset is being used for.
Artists put content on the internet so you can look at it and share it with your friends and say “wow cool art” not so you can run it through an art generating model to put them out of job. That we never anticipated this possibility means you call fallback on the “fair use” argument but legal does not mean ethical, especially when the law has yet to catch up to changing times.