I worked in a research capacity in the voice assistant org of a big tech company until very recently. There was a lot of panic when ChatGPT came out, as it became clear that the vast bulk of the org's modeling work and research essentially had no future. I feel bad for some of my colleagues who were really specialized in specific NLP technology niches (e.g. building NLU ontologies) which have been made totally obsolete by these generalized LLMs.

Personally - I'm moving to more of a focus on analytical modeling. There is really nothing interesting about deep learning to me anymore. The reality is that any new useful DL models will be coming out of mega-teams in a few companies, where improving output through detailed understanding of modeling is less cost effective than simply increasing data quality and scale. Its all very boring to me.