I think it's a good question. Like I recall many years ago reading Harry Harrison's "Stainless Steel Rat" stories, where people have starships capable of faster than light travel ... but on the ground they still drive automobiles with internal combustion engines and rubber tires. This seemed very unlikely to me.
I found "Caprica" very jarring this way. They live on another planet and have interstellar travel ... but they dress in clothes that look exactly like 21st century American clothes. Not only do they have cars that look just like 21st century American cars, but they even have license plates that look just like 21st century American license plates. Not only is there technology 21st century, but their social and political structures are the same too.
Now that said, some technologies reach a point where they are, essentially, complete. Like, the fork has been unchanged for hundreds of years and I suspect will be unchanged for hundreds of years into the future. People have tried to add a motor to it so that it can pick up things like spagetti easier but that just makes it bulkier, and now it has a battery that has to be recharged. I expect that people in the future will sit in chairs little different from those we use today. Etc.
But other technologies, we seem to be simply somewhere along the path to completion. I would be very surprised if computers 500 years from now were just like the computers of today. Etc.
All that said, if your story is about, say, an action adventure of the colonists on Tau Ceti 3 rebelling against Earth, you don't want to get bogged down in a lengthy discussion of how footwear has changed over the centuries. You want the story to focus on what's relevant to the plot. So the trick is to not have glaring anachronisms, but not to dwell on background details.
Imagine someone in 1821 trying to write a story set in 2021. Let's suppose he is foresighted enough to predict the invention of airplanes. He might have a scene where he wants a character on the airplane to get a hot drink from the flight attendant. In retrospect, we could see that it would clearly be a blunder if he wrote, "The flight attendant added some coal to the oven on the airplane." Would he have the prescience to think of microwave ovens? Probably not. But at least he might be smart enough to figure out that it would likely be an electric stove and not coal. If he casually made a reference to the flight attendant turning up the electricity on the stove, that would set the right background for the technology without having to dwell on it.
He might well ask himself, "Will people in 2021 still drink coffee? Or will there be some new drink?"
And just by the way, notice I said, "the flight attendant". My guess is that few writers in 1821 would have anticipated the social changes that would lead society to go from referring to such people as "stewardesses" to calling them "flight attendants". Anyone with that foresight could have written a story about that all by itself. And probably readers at the time would have said, "Wow, did you read this crazy science fiction story? The writer imagines a society where women don't want to be thought of as women any more, but they want to be just like men! Why would any woman want that?"