I don’t check Twitter or Instagram. The only thing I know about this image is what you see here, which I liked. Edit: Chotosahib pointed to the website FAQ, which makes for interesting reading.
“Bill Posters wants to teach people how to hack the streets. The graphic artist, activist and researcher (real name Barney Francis) has written an “illicit, tactical guide to creating art in public”. The Street Art Manual is an 11-step guide to street art covering the basics of graffiti and stencil work as well as providing an in-depth look at social media-grabbing work like urban murals.”—Henry Wong, “‘It stops the one-way flow of corporate bullshit’: graphic artist Bill Posters on subvertising.” Design Week. August 27, 2020.
The fact that this article is from a trade rag for advertising creatives says volumes.