I seriously hate how many love to abuse the word “steal”. Someone re-posts your art on DeviantArt = “SOMEONE’S STEALING MY ART!”; Someone re-posts your video on YouTube = “SOMEONE"S STEALING MY YOUTUBE VIDEOS!”; Someone re-uses the sample features from the Unreal marketplace = “SOMEONE’S STEALING EPIC GAMES’ CONTENT!”
You do realize that Ark: Survival Evolve also uses the FPS Shooter template in their game too right? So you’re going to accuse them of ‘stealing’ too?!?
Not trying to say what the modder on Steam is doing is right as it is indeed counterproductive lazy work, but it’s 100% legal.
There is a difference between stealing and COPYING. That difference is NOT to be underestimated and many make that mistake very easily.
Stealing is usually more physical - someone taking your artwork copy from your own home or such where it resides, or if virtual, uploading it without your position whereas you have not yet uploaded it on the net, essentially in that case you can argue he/she is stealing your rights.
Copying - taking something that’s already out there and re-uploading or re-using it without consent.
Although on a side note, the modder re-usage actually comes in handly. FPS Shooter arena at night with some slight alterations. I just wished he/she added more alterations to make it become their own instead of a blatant copy.