I think you wanted to say: "Are we simplifying things in software development?" All of the points you have made are actually simplifications of what might be the optimal solution.
Imagine the solution space as some multidimensional space where there is somewhere an optimal solution. The dimensions include the habits of your programmers, the problem you are trying to solve, and the phase of the moon. Microservices, a special form of redundancy, continuous integration, agile development are all extreme solutions to specific problems. Solutions which are extreme in that they are somewhere in the corner of your multidimensional solution space.
They are popular because they are radical in the way they conceptualize the shape of the problem and attempt to solve it. Therefore they seem like optimal solutions at first glance when really they only apply really well to specific toy models.
Take e.g. microservices. Yes, it's really nice if you can split up your big problem into small problems and define nice and clean interfaces. But it becomes a liability if you need too much communication between the services, up until the point where you merge your microservices back together in order to take advantage of using shared memory.
Don't believe any claims that there is a categorically better way to do everything. Most often, when you see an article about something like that, it is "proved" by showing it solves a toy model very well. But actual problems are rarely like toy models. Therefore the optimal solution to an actual problem is never a definite answer from one of the "simplified corner case scenarios" but it is actually just as complex as the problem you are trying to solve.
Imagine the solution space as some multidimensional space where there is somewhere an optimal solution. The dimensions include the habits of your programmers, the problem you are trying to solve, and the phase of the moon. Microservices, a special form of redundancy, continuous integration, agile development are all extreme solutions to specific problems. Solutions which are extreme in that they are somewhere in the corner of your multidimensional solution space.
They are popular because they are radical in the way they conceptualize the shape of the problem and attempt to solve it. Therefore they seem like optimal solutions at first glance when really they only apply really well to specific toy models.
Take e.g. microservices. Yes, it's really nice if you can split up your big problem into small problems and define nice and clean interfaces. But it becomes a liability if you need too much communication between the services, up until the point where you merge your microservices back together in order to take advantage of using shared memory.
Don't believe any claims that there is a categorically better way to do everything. Most often, when you see an article about something like that, it is "proved" by showing it solves a toy model very well. But actual problems are rarely like toy models. Therefore the optimal solution to an actual problem is never a definite answer from one of the "simplified corner case scenarios" but it is actually just as complex as the problem you are trying to solve.