While hashtags are indeed essential for someone looking to gain more followers and build their brand, this obnoxious way of going about it is to be avoided. Over-tagging in your caption (one or two tongue-in-cheek ones are fine) is way too in-your-face, and will transfer over if you choose to share the picture on Facebook or Twitter. Not a good look. Instead, copy and paste the hashtags into a comment on your post, that way you can reap the benefits but easily delete them later.