well yeah my case is that Excel and word are the best option. They integrate nicely with onedrive and you can plugin the documents into sharepoint and several other platforms within microsoft ecosystem
i might be biased due the fact am an azure power user and have several other tools that work together
At least in Germany some sites/blogs reported in the last few month that many users lost their Microsoft accounts without reason, so i wouldn't be too sure about this.
plus, never seen anyone complaining about getting their officce account deleted into void