Interesting, Tim. Presumably it has “open office” or something so how to you get on dealing with the microsoft based things people send you?
Everything is Google based, so google docs, google mail, chrome etc, all free, so well worth it if you want to use a Chromebook, my better half has used the same Chromebook for nearly 5 years now, cost around £300 at the time, it never goes out of date, the OS is updated automatically, not sure about the virus aspects and if they are truly immune.
Outside of the technicals, I would use a Chromebook if it wasn't for privacy concerns and I am already invested in MacOS software (privacy concerns are mostly my personal objections to Google itself, therefore you could say I have personal objections to the brand and not because I disagree with the level of security a Chromebook can provide....Google itself notwithstanding).
I don't know if it's possible to use it without a Google account (I suspect not) and unfortunately I operate an Android phone so now I will contradict my own objections to Google because an Android phone requires a Google sign-in (even though the sign-in is not used for any other purpose), so privacy concerns are no doubt a moot point as mobile phones are clearly now the bigger security risk if they are used for browsing and other apps.
From a privacy PoV we are all screwed whatever tech you own!