The fear of missing out on a free premium item that some might consider quite desirable - and a bit of a bargain as the store page suggests it'd normally be 10k Arx (if they're even sold regularly now) - that's being offered only during part of a (busy, pre-xmas) work week, If that's not playing on FOMO I don't know what is.
Again, where is the fear? What is causing the fear of missing out?
If they don't know it's there, how can they be afraid of missing it? If they know it's there, they're clearly having some free time since they're browsing the forum or social media or something and can just grab it. If it required installing the game and logging in, then yeah I could see people panicking that they might not have a moment to do that before friday. Since you can do it in literally 30s after seeing that post, I just don't get why you'd manage to develop FOMO from it.
Or is the argument that because they occasionally give out free skins, everybody needs to constantly be fearing that they'll miss out on something? In which case how is this different from every other time they've given something free?
There was a free decal I missed in october... I'm a bit disappointed, but since I didn't know it was available at the time it was available, I suffered no fear of missing out on it, because by the time I found out about it I'd already missed it.
Now that sale in the store, with no defined end date... that I can categorize as FOMO...
"You should buy now! Sale might be over tomorrow! ...or it might last a month, who knows..."