Does rapid growth tend to change a culture for the better or for the worse? Why?

Better. But there will be a lot of turnover.

It truly depends on the situation of the growth. Some things need time to mature whilst other things can handle "fly by the seat of the pants" situations.

I was wrong this wasn't written by a millenial, it was done by an even more insidious being; a Bernie Sanders supporter.

It doesn’t cause a problem as long as top management appreciates and rewards the rank and file for their work vs only rewarding top management for the achievement. If only top management is rewarded, the culture becomes classic corporate America: the top 1% reap all the benefits.

Better, the worst thing for a company is for it to rest on its lorals. Always look and move forward

Both ways - no planning = disaster. Great planning + execution = better.

From my experience, rapid growth may change a culture for the worse as it becomes more challenging to juggle the duties and responsibilities, and restructuring, downsizing and reduction in workforce may occur.

Worse, as the organisation doesn’t evolve as fast as profits

For the worse. We are currently going through a reorganization and hiring new people and a lot of work shifting that is happening which is creating lots of low moral, confusion and problems. Mangment isn’t working with employees to understand the issues and going on as nothing is happening.

growth can create a strong sense of excitement for the success of the company, but if the right processes/infrastructure isn't in place the growth can cause major issues which tends to burn out employees who have to deal with the issues that could have been avoided with the proper resources to handle the growth