As was sort of mentioned earlier; California passed a law some time ago that allows the use of only a certain number of 'assault weapon' accessories. This includes things like removable mags, pistol grips, telescoping stocks, shoulder things that go up, and so on. Because of this, you can't really use removable mags in combo with a pistol grip. I believe their law states that in order for a mag to be considered 'fixed' it had to require the use of a 'tool' to remove it. Using anything but your finger is a tool, is pretty much a tool, whether its the tip of a bullet, a twig, screwdriver, whatever. It's a tool. Speaking of tools, Senator Yee clearly fits that description as well.
Anyways, to sort of circumvent the law, the bullet button was invented. So, people could run a pistol grip, and still (safely) be able to remove the magazine in order to reload. Trying to load a permanently fixed magazine is stupid and unsafe. As was also stated earlier; killing 31 people is OK, but 32 is too much?
Uneducated people should be barred from political positions.