For him, the norm is still to redline a document on paper, and have his secretary add those changes to the original digital document and have that sent over to the opposing team for the same treatment.
I don't have strong opinions about LLMs' coding ability (though compared to the other comments so far I am more on the "LLMs are pretty good at creating software from natural language descriptions" side) but even assuming that LLMs can give programmers a 50x productivity increase, I'd assume it would take 10-50 years for industry and processes to evolve to take advantage of that increase.