I don't work at CommScope, yet, but it seems kinda negative here, so wanted to give some outside advice. The complaints you speak of are common for a publicly traded company. In the review boards like Glassdoor and others, you can also see that HR is going through each complaint and replying to some in order to improve things.
I currently work in a government job and have worked at publicly traded companies like CommScope before. In the public companies, all they complaints you speak of were exactly the same, in regards to employees feeling like management doesn't care. Government jobs that don't have this problem, generally pay less.
From the looks of all the salary reports, CommScope pays significantly higher than most similar companies. The grass always looks greener on the other side. Companies are what the employees make it. The management you speak of are just your fellow co-workers. In the way the job descriptions are defined, management genuinely wants to get input from everyone at CommScope.
Layoff boards are notorious for just negative comments. Every public company has layoffs. If you are thinking of jumping ship, make sure you do your due dilligence and not just based off of low morale from reading comments or from negative co-workers. The evidence is in plain sight of how HR and upper management is trying to improve things. Improvement takes time, just like stock investing takes time in order to make money.