It doesn’t make sense for everyone to focus primarily on the political issue they deem to be the most important, for the same reason that it doesn’t make sense for everyone to choose the career they deem to be the most important. Competitive advantage applies to both of these arenas, and it is perfectly rational and prudent to focus on political issues that you do not believe to be the most important issues facing society, if you have reason to believe that your efforts can make more of a difference in some other political issue.