Homogenous design is a good thing. The internet isn't nearly homogeneous enough actually. The mid-90s desktop apps got it right and we've been regressing ever since then because web designers are like kids with crayons.

UI Design is an art. Like any other art, it's bound to have constant currents and counter currents. More than the designer's whims, it's the population's need for novelty, generational differences, and the desire of companies to stand out what is driving the wheel.

The early web was filled with wacky and unique websites and it's a ubiquitously loved period of the internet.