First, you haven't paid for that software. Secondly, this software is an execution environment on an another machine, so you don't have control over it's update cycle, even if it wasn't auto update. Finally, version updates in browser can not be compared in any way to an OS version update, they are usually quite minor. Besides, when they do break something, you got thousand of publication telling you it's comming and what's it gona do to your code.

There is no such thing here. You are on your machine, minding your own business on something you have paid, expecting support for it. You are harassed with an upgrade you don't need and you refuse. Then you are updated against your will, sometime it reboot in a moment you need it and lock your machine for some time. And then if you do accept the upgrade (out of "I don't have time for this s*"), you don't know what's going to break. Your scanner ? Your drawing tablet ? Personnaly, my login broke, it's in a state of a perpetual guest session.

Now compare that to Ubuntu, luckily on my second partition. It's supported for 5 years despite the fact I didn't pay for it, and doesn't force me to upgrade. Oh, and it's not full of spywares.