Basener's ceiling and evolution
Four quick flaws:

1) Environments are always changing. The fitness space is dynamic, and includes both biological and non-biological players, the former which are also ever-changing. Given a sufficiently stable ecosystem, one would expect an equilibrium among species to develop (though it could be cyclical). However even if the environment stays constant, novel mutations could always increase the fitness of a given species, which could then affect the fitness of all the other species. Also, natural selection is not the only factor that influences evolution, and other factors can add dynamic instability.

2) You are conflating genetic algorithms with evolution. Genetic algorithms use selection to solve a minimization problem and are typically bounded within fairly rigid constraints. They are motivated by biology, not models for biology.

3) You are conflating complexity and fitness. Complexity can be more fit or it can be less fit. Evolution only selects for fitness, not for complexity.

4) Do organisms continually increase in complexity? Depending on how you define it, they may not. Thinking about humans as a "goal" of evolution or something like that is a feature of creationism or intelligent design, not biological evolution. Some of the most successful organisms on Earth in terms of number of individuals or even biomass are some of the simplest.

There may be others as well.