The problem isn't the boycott itself, but the coercion to boycott

Whether one boycotts or not is a matter of personal freedom,
and promoting a boycott is also a matter of freedom.
However, the problem lies in forcing others to boycott
and harassing those who choose not to participate.
Representative examples include the Lexus stalking incident during the No Japan movement,
or the recent incident involving a musical actor during the Starbucks controversy.