ya that isn't going to stay up for very long. lol If Rockstar Games/Take-Two Interactive isn't getting paid they will 100% be hit with a big fat DCMA take down notice.
You can play the Mobile version for like $5. I've played it on my computer using a android emulator with keyboard and mouse. It's ok but not as fun as the original. Played COD Mobile on my computer using keyboard and mouse as well and I absolutely destroy everyone but it is really laggy.
btw it appears to be made by a Russian developer. Don't know if I would trust running that on my browser lol. Oh and it asks for a real game key to make cloud saves.