When I started out, my goal was to have a meeting every week and to include everyone. It was a waste of time. People would throw out ideas they had no intent to pursue, and when they were not talking would start fiddling with their phones.

You'd be surprised how many people don't value other people's time, or even other people's ideas. It's easy to imagine you could make a difference or be that difference, but if you truly believed you should have a say, then you should make it known, and either prove yourself, or find a job that comes with the satisfaction you desire. Like, maybe a more team oriented environment.

The truth is, especially at a large tech company, you are replaceable. No one is asking for your personal touch be it at a Foxconn assembly line or an engineer at Cisco. Unless of course, your job title includes "designer" or "architect" etc. But otherwise you're there to do the impersonal work you agreed to do for the impersonal money they're paying you. That's all a job is. You get more for better skills and more experience / less risk. All they are looking for is a guarantee that the work will get done.

This isn't to say you shouldn't have fun or that you shouldn't make the most of it. It's just saying that if fun or "most" entails being heard by execs or barking up the tree, then you will pay for it one way or the other; either with your emotional well being, or with lower pay due to greater overhead for being noisy and needy.

Managers are paid human sound barriers that permit lower quality hires for less pay. This is an important role, as are those being managed. But to think you can get past the manager who's very job is to silence you is the wrong approach. Don't raise your voice or kick harder. You need to become a manager. Either that or go work at a smaller company where the CEO sits across the room.