I needed to send categorized and annotated batch of pictures (150MB) to a client, and for some reason I decided to drop the pics into excel sheet (allowing me to nicely support them with data etc). The client complained that they use web version of office 360, and that version doesnt allow to open excel files bigger than 100MB. I cant even.
We're already going there, the new Python integration for Excel is cloud-only - the Python is not executed locally. It wouldn't surprise me if more and more features in Excel going forward will be the same way.
I've been using LibreOffice Calc instead of Excel for maybe 10 years, and I'm still yet to come across a feature that Excel has which Calc doesn't. The UI leaves a lot to be desired though. Anyway point is, I don't think Excel will be missed when Microsoft inevitably enshitifies it.