I cannot emphasize enough that the problem with The Sims 4, like the main article for the review says, is that The Sims 3 exists. TS4 plays very much like TS2, and feels like a successor to TS2 in that it has similar gameplay while expanding upon it with improved performance and graphics, along with some additional game mechanics. I cannot dictate it enough either - The performance seriously blows away any of the other games in the series.
If you never liked The Sims 3 and preferred TS 1 or 2 play style, then you will absolutely adore TS4. However, many features that were in TS3 are lost in this game, but many traditional TS players were unhappy with some of these changes as it controversially destroyed what the series is about. For example, a player might want to have total control over and god-like control over a neighborhood, and story progression disallowed this in TS3, and this disturbance was removed for the 4th game.
This game certainly is flawed and a disappointment as a successor to The Sims 3 - But that's just about the only problem with it. The Sims 4 is simply lost in the shadows of its gargantuan, and buggy, predecessor.
As a stand alone game, I absolutely recommend The Sims 4. It has beautiful performance, graphics, style, user interface, lovable characters that really do have personality and feelings constructed in the new and hands-down best Create-A-Sim, a wonderful build/buy mode, and a very endearing atmosphere that sucks you in.
The Sims 4 is a wonderful experience in its own right, but finds itself overshadowed by its big brother that came before it.