Sure, maybe solving NLP is too great a claim to make. It is still not at all ordinary that beforehand we could not solve referential questions algorithmically, that we could not extract information from plain text into custom schemas of structured data, and context-aware mechanical translation was really unheard of. Nowadays LLMs can do most of these tasks better than most humans in most scenarios. Many NLP questions at least I find interesting reduce to questions of the explanability of LLMs.