The hologram that follows the main characters seems to be pretty high tech, and looks flawless. And they show the hologram stuff by having her move through objects.
But when the main characters walks around the city, you see hologram commercials that are the size of buildings. Those don't look lifelike. They're transparent and have limited colors.
Or many others did too. Earth Final Conflict for one, the hand tablets. Hell Tech works amazing in black mirror, one might argue WAY TOO WELL.
As for Star Trek holograms, when the episode doesn't want to "play for surprise", it usually briefly shows the hologram appearing - which uses its very specific VFX, so that it's immediately recognized as a hologram (and not confused with teleportation, which uses a different style of VFX).