Some coaches say changing a runner’s stride is a bad idea. It depends whether the runner is getting injured and/or is inefficient. It can be difficult to change the bad habit but the runner can have big benefits. One client had hip issues because she was over striding and landing on her toes. Changing to land mid foot and take off on toe, she no longer has hip issues. Another benefit to do Chi Running, she has gotten faster.
If you are getting injured and/or struggling with your running, see a running coach to do analysis of your form. The analysis can include video tapping. Since I had added video tapping runners and swimmers, I can guide them to improving their form and efficiency.