You can't look at this in terms of landfills and "throwaway culture" or whatever other pop sayings are going around these days. Not only is it a silly way to look at your broken toaster, odds are, repairing it may use just as much energy and landfill space as buying a new one. By the time you add up the energy and environmental costs of buying new parts, the labor involved in repair (including transportation costs for the laborer) you may end up with a half-assed toaster whose "environmental cost" of repair is more than the new one. And by the way, it will break again, shortly and you will end up just buying the new one anyway.
And yes, it is true that years ago, cars were easier to repair as they were simpler in nature. But it is also true that they needed repairs far more often. Every year, you had new points, plugs, and condensor put in the car, and maybe a new distributor cap and plug wires as well. In three years, a new battery and exhaust system as well as tires and brakes. A clutch might last five years, with careful use.
Today, many of these things can last 100,000 miles or more - sometimes the life of the car. So cars are harder to work on, mostly because it is not expected you will need to work on them. Even changing a light bulb in a car is hard to do these days, as even filament bulbs last longer and LEDs last the life of the car. This is progress, not regression, despite what the "everything was better in the good old days" people will tell you.
The big problem with "fixing things" is that in order to be able to do it in a cost-effective manner, you have to be handy and do-it-yourself. In Western countries, the cost of labor is so high that it is often cost-prohibitive to repair something and cheaper to buy new. Why pay $300 for a service call on a washing machine when you can buy a new one for the same amount?
And not everyone is "handy". There are people who can paint a painting because they have that talent. There are people who can give a massage because they have the skill and talent. There are folks that can create beautiful music because of the skills they learned and their native talents. And there are people who can take apart and assemble things in minutes, because they just have the hands for it - the hands and the kind of brain that tells them intuitively how something is put together.
And some folks just don't have this talent. They are "all thumbs" when it comes to mechanical things. Others simply don't want to learn, and that is sad. But if you are a klutz with a screwdriver, maybe "mending things" isn't your bag. And the good news is, today things require a lot less mending. This does mean throwing out broken technology, but that is the name of the game.
And note, this is not to say the other extreme is also valid - that you should trade in your leased car every three years to "avoid repairs costs" - that is just nonsense. Rather, you should set a rational expectation of use - 100,000 miles or so - and move on from there, because that is, today, an age where a lot of problems do manifest themselves in cars, and while you can go further, it will require more and more repairs after that point.
A final note: I am not sure what the business model of these repair cafes exactly is. How do you "make money" from people helping people fix things? Do you charge a fee? Sell them coffee? What? And how does this add to the cost of "repairs" if you have to pay a fee to the cafe? And what about liability when something explodes due to improper repair? It is an interesting "fad" but like the barter vending machine (remember that?) I doubt it is more than a mere stunt.