I disagree, I think a degree of homogenization is good for information heavy websites, like government ones [1][2][3] and sites geared towards documentation. Consistency here is good because it makes things familiar and therefore means people spend less time trying to figure things out/find what they're looking for. Creativity isn't necessarily the point with sites like these. Now if you're marketing a product or showcasing something on the creative side, that's a different situation entirely and in that case I agree with you. The Bootstrap wave 10 years ago was indeed excessive.

[1] https://18f.gsa.gov/

[2] https://www.gov.uk/government/consultations/project-gigabit-...

[3] https://www.healthcare.gov/