As a former asshole designing, implementing, and running those surveys in various capacities, the company only runs these to dishonestly interpret the results as they please. Noone will be surprised to learn your employer almost certainly doesn't care about what you think - only the returns you deliver. It's for their benefit - not ours.
Mind you, it could be worse - I remember speaking to an exec at a major bank that told me words to the effect of "I know we have a morale problem - a big fucking morale problem - but if I measure it, I'll have to actually do something about it."
Yep, the only result I've ever seen from these engagement surveys are things NOBODY would ever have requested, but management insists was demanded in the survey. Things like returning to the bullshit yearly self-reviews.