thanks for pointing this out. all of my designs will have some type of watermark from here on out. It is to make it harder for people to sell the design, and businesses use them for their own promotional material. The classy chinese company 86duino is doing things like this for example:https://www.youtube.com/watch?v=gZ23jl_Gyns
versions without the watermark will be offered for sale and through my patreon.