IMO if an item get's an official update, then that's a brand new item - you can make a new request for it, and upload it to the blog etc etc (The original filler does not always have the updated files) - and they can coexist on the blog with the old version (some people love to have the older versions too)
If it's a Converted item etc, that will be a Custom Content - in that case it's nice to include the original uploader, but if it's an older upload it's already all around the net, so it won't be sure if the "Converter" downloaded the item from here.
I checked the item's page that you linked, and it looks like, sometime around 2019 it got a small G8.1 update. I also checked the files on the blog, yours is the original version, and the other one is the one with the 2019 update (tho I wouldn't really call it update, but that's on the vendor).
I think it's totally legit 🙂