This absolutely looks amazing. But I also love this process of reinventing the electronic table (spreadsheet), and the columnar-text altogether. 10 more years and we're back in 1982.
I would say that the spreadsheet-like data view is a must-do in the career of the UI person. But then this all, without proper back-end wired to it, means very little to the overall product experience. In fact - proper back-end with not-so-cool UI may deliver quite the experience...
while this is impressive technically I also get the feeling that we are back in 1982. Spreadsheets are great general purpose tools and useful for financial modeling. But I'd argue they provide a terrible UX for most other tasks. The default assumption that every cell is editable is demonstrably bad - even for financial modeling. Yes you can lock cells and columns, but this is a sticking plaster. Anyway I'm probably biased in this area as I'm working on a https://addmaple.com where we are attempting a very different UX for working with tabular data.
I would say that the spreadsheet-like data view is a must-do in the career of the UI person. But then this all, without proper back-end wired to it, means very little to the overall product experience. In fact - proper back-end with not-so-cool UI may deliver quite the experience...