You can still install add-ons/extensions in Chromium, so it wouldn't help at all. Also, most malicious extensions try to siphon data from your web-session (e.g.

You can still install add-ons/extensions in Chromium, so it wouldn't help at all. Also, most malicious extensions try to siphon data from your web-session (e.g. your open gmail page), so sandoxing through snaps doesn't help, either. Chrome is still a fairly safe browser, and it is well within Google's interests to keep it that way. The big issue is users installing malicious extensions disguised as useful ones, and that's an issue independent of the used browser. You could argue that you are much safer with Firefox. Not because it's inherently safer, but simply because it's lower market penetration means that it is a less interesting target.