What should I do if I meet a leader who always lets his subordinates pay for themselves?

I suggest you find another job! Always let you personally pay for the company's affairs, which shows that this company is really "public and private." The boss only considers the interests of the company, only his own interests, regardless of the interests of employees, and does not care about the lives of employees. This kind of boss regards employees as cattle and horses that serve the interests of the company. Such a boss is extremely selfish. It is better to leave this company as soon as possible.