Influencers need a blog for a few reasons. A blog can help to create a following for the influencer and amplify their voice. Additionally, a blog can act as a way to share content that is valuable and interesting to followers, which can help to increase engagement and audience reach. Finally, a blog can serve as an important communication tool for influencers and help them to share updates and announcements about their work.
However, not all influencers need a blog in order to be successful. Some influencers may find that they are more successful using other forms of communication such as social media or email newsletters. Ultimately, it is up to each individual influencer to decide what type of communication works best for them.