Those who are willing to hit themselves in the face with a hammer because of a TikTok trend, deserve to be hit in the face with a hammer.
People are influenced by the world and people around them. And for young people today, TikTok is a very powerful influence. It tells people what is important in life, and how to get it.
You and I believe that hitting yourself in the hammer is unlikely to bring anything good; and highly likely to bring pain and problems; but we only know that because of things we’ve already learned. Different people learn different things at different points in their lives. And so there are a lot of young people who, when they are told that hitting yourself in the face with a hammer is going to make your more attractive - they might believe it and decide it is worth it.