It works as advertised, I’d say. The Email service works fine, no issue to date.

The VPN has the same issues as others, meaning some sites block some servers entirely, and others force captcha after captcha at you. There also was the problem with missing portforwarding options in the app (at least on Linux), but that is fixed now. Overall it works fine, never had too much of a problem with it, at most had to switch servers if my connection got blocked from the site.

The calendar is a calendar, end of sentence.

Proton pass is a bit weird. They don’t offer any desktop app, you can only use the website or the browser plugin. There is no benefit I could think of over bitwarden and I’d even recommend bitwarden more than proton for password management. But it does work without problems.

No idea about proton drive. Last time I used it you had to manually upload each item into the online safe. But from a quick look it seems like there is a desktop app now that offers automatic backups/uploads.

For me it’s worth it since even the recent news articles show that they keep their privacy promises. But I also got the money to spare for it. You could get all functionalities for less money and to about the same level of privacy, but it takes more effort and time. It’s for you to decide if the convenience is worth it.