It’s now a core slice of the Google login pie, and you will absolutely have to try a slice.
Google accounts have a whole variety of safety measures to keep would-be compromisers out. If someone manages to obtain your password and tries to sign in as you, Google runs some checks. If they flag certain unusual activity, such as logins from another country, they’ll request additional verification.
There’s one school of security thinking which is a little like security nihilism. Essentially, everything is a threat and we must reduce the attack surface. Okay, fine. The problem is, for some, this turns into a game of “remove absolutely everything from the device.” At what point do we stop and look in wonder at our expensive, utterly non-functional box?
The Sun has the blocker fired directly into its heart, that's what. If you want to strip out the functionality of browsers, there is always going to be a price to pay. For example, the earliest ad blocker/script blocker tools often made everything nigh on unusable. Thankfully, ad blockers have stepped up their game and are now part of a healthy, balanced cybersecurity hygiene routine.
As was mentioned on the Daily Swig blog, surfers such as those using TOR are likely to be the most impacted. If you’re on TOR and trying to use Google services, you may have to force yourself to switch. If you still won’t use an alternate browser for Googling, perhaps ultimately, you may have to find another provider.
For everyone else, this is a good thing and will help keep your accounts more secure in the long run.