There really aren't any Heroku leaders anymore. I think anyone director level or higher is Salesforce—not Heroku.
It's worth mentioning that this isn't a result of Salesforce acquiring Heroku. That happened 12 years ago when Heroku was next to nothing. Salesforce gets credit for investing in and making Heroku. Why they ultimately have decided to give up on it I have no idea. I hear it's because salespeople had a hard time understanding how to sell it which seems like a strange reason to give up entirely.