But they not only have updates, they also have form filling, a password manager (wink wink), sync between devices and so many more basic features that Firefox has too
If you ever use SQL Server Management Studio, you can experience the opposite. Whenever there's an update, you'll get a notification in the application, but to actually install it, you need to go to Microsoft's website to download the latest version and install it yourself. Chrome, on the other hand, updates itself upon restart without requiring anything special from the user.
As a software developer, I really like that part. It means that websites I work on only need to consider the features supported in the latest version of major browsers rather than the last several (as was the case with Internet Explorer).
So, it's nice and something that I remember really appreciating when Chrome was getting popular. But it's still a weird thing to brag about.
With other browsers, you need to update them from time to time. Chrome one has all the updates already built in from day one, so you never need to update it. Isn’t that great. The devs at Google are so good that they decided to do all the updates at once so they never need to worry about updates ever again.