Essay coming in:
There is definitely a culture in the UK and US of working overtime, which is well-researched. Almost every job I have ever had - from a waitress through to a marketing manager - has pressured me to work more hours. Both my parents who work in the care sector have also been shamed for not picking up extra shifts. Not working overtime or refusing extra shifts can cost you your job in some sectors, or at the least leave you ostracised. However, this attitude is more couched in accusations of "being lazy" and "not a team player", which is quite different to what Grace is talking about. The boomer tweets that someone shared with regards to Grace's book are really good examples of this.
Grace is more focussed on privileged influencer culture. She could be right in that people whose lives revolve around social media may well feel pressured to have side hustles - I don't know this for certain because I've not read any research on the subject. It is also difficult to switch off when you monetise your life and/or gain your income through social media because you can technically always work from just your phone, and the things that you used to do to relax (e.g. scroll Insta) are now inherently work-related.
The more I hear, the more I feel Grace has written a book for wealthy wannabe influencers. There are tonnes of productivity books out there written by business entrepreneurs already, so her publishers could have adopted a unique marketing angle targeting a relatively new demographic. It wouldn't matter that the book isn't a general productivity book that applies to most people. However, they keep playing it as advice relevant to all the young generations, which could bite them in the ass when regular people review the book.
This links to my next point that my biggest issue is that Grace and her publishers, from what I can see from the snippets released this far, are presenting Grace's entirely anecdotal experiences as being general facts. The endless comments about "nuances" and "culture" place Grace as being some kind of anthropologist or sociologist who has conjured new original thought. It grinds because it seems incredibly narcissistic and invalidating for someone so privileged to write an entire book about their own experiences as generalisations that apply to everyone. It would feel very different if this was Grace's autobiography or if she was presenting it as just, 'Here are my experiences and feelings, I know not everyone will relate, but take what you want from them,' and not writing generalised statements about culture and society.
I also want to add that Grace confuses and conflates concepts. E.g. creating and ticking off lists is not synonymous with "announcement culture". Posting the list on social media would be, but making the list itself is not. I am sure there are a tonne of psychology and business research papers about productivity, list-making, etc, to help draw conclusions on that last point. As a note, Grace did the same thing again of taking an anecdotal experience and generalising it. Whilst she acknowledges it's just her "personal and undeniable love of ticking things off", the preceding and closing paragraphs are definitive societal conclusions based on those personal anecdotes.