Some of it is organic hype and some of it is Corporate Funded social media teams / personnel who do their best to control the online narrative. Happens every time a Triple A game launches, no matter how many times that Company has betrayed it's audience and succumbed to greedy scummy practices. People even still talk about Activision Blizzard titles as if it won't just be another cashgrab.
Personally, I'm always super skeptical about these sort of games having a positive reception. I think the fast decline in user scores since launch is a perfect example of how unreliable the hype is.
Sims 4 base game is actually already free on steam. I hear from a good friend, not me personally, that it has some great porn mods on the lovers lab site. Some bad mods, too.
RIP Maxis and like 50 other studios that EA bought and dissolved over the decades.
No, Unity has always been an inferior engine to others such as Unreal Engine, Lumberyard, Blender, etc. In fact, the Unreal Engine 3 UDK became free well over a decade ago, and it's basically Unity if Unity weren't the scummy corporate vampires they've always been.
It's not like nobody warned you Unity was bad, they've been hounding developers forever. I've personally been warning people to not touch unity and instead use the vastly superior Unreal Engine, ever since the UDK days. This isn't the fall of Unity, it's mid descent.