That was confetti. Already proven.
The buzzer thing was a claim with no merit, by a fake account, and has been shot down by the commissioner. I get it that people want to believe things like this, but this is how conspiracy theorists and cult leaders make gullible people believe things They find people who are easily persuaded, then they work backwards to create a theory. Everyone knows Altuve held his shirt closed. We all saw it. So what if we make a claim that he did so because he was hiding something? Seems reasonable. Now, people who are already upset and looking for possible other faults will latch onto this.
It's kind of funny. It really shows how gullible people are when they are upset. Honestly, politicians should be studying this.