Ive experienced this at work as well, even at a more modestly sized company.

You should always be chasing the simplest solution for your problem because no matter how smart you are today and how much you understand the problem and the abstractions, a year or two from now you’ll be a different person.

You might have new team members, or fewer, new management, marketing goals etc etc etc. Complexity is inherently difficult to change. My chasing simplicity, you are optimizing for potential change.