I assume you're citing a couple of studies with tiny samples that have been going around here. There's very little solid evidence to support the claim that LLMs demonstrably erode cognitive capacity. But if you have large scale, peer reviewed studies definitively showing this to be the case feel free to share them.

People lose certain skills working with LLMs, but that has always been the case with automation. Very few people know how to write assembly by hand, and practically nobody knows how to operate punch cards. Yet, we hardly claim that there was some loss of cognitive capacity as a result. People just spend their time focusing on different things now.

And I've already explained to you why the focus on the tooling is deeply misguided. You ignored my points entirely, which tells me that you're not actually trying to have a discussion in good faith here yourself.