1) One man's "hit man" is another's "demand for rigorous quality standards".
2) Through years (decades?) of ownership, Mr. Patel has developed a keen sense of what constitutes a high-quality operation and a shop that's cutting corners on quality. His comments were just "suggestions" and "gut feeling" based on his experience being an operator.
3) While he ended up acquiring some of the restaurants, he didn't acquire all of the restaurants closing under his watch. Through his tremendous experience (see above), supplier connections and economies of scale peculiar to a large franchisee, he saw a potential to "clean up the act" under new management and keep the jobs in the community (insert a tear jerker story of some employee extremely happy about such outcome).