I can't tell.

Google sometimes shows snippets from my website as a direct answer to a query (in a collapsible box). If the out-of-context answer satisfies the user, then I get no traffic.

Can confirm. Most of the time Google give decent snippet with enough information without requiring me to visit the referenced web.

It gets worse with current state of common websites full of mailing, ads and cookie popup, moreover account-walled content, even with adblocker.

In at least one case, Google gave a completely wrong answer (snippet for the wrong question), and credited me for it.

For the record, I run a pretty lean, annoyance-free website. It looks the same without an ad blocker. It uses Plausible for analytics. No newsletters, no annoyances. I still get shafted.