Do you ever make a mistake when designing a lettermark logo?

I know having a lettermark logo is pretty straightforward, but in a recent blog our team wrote, most professional graphic designers have a hard time perfecting the best lettermark logo for a brand.

Do you agree with this? If so, what's mistake you create most when creating one?

Anyway; here's the blog my team wrote: https://logomakerr.ai/blog/mistakes-to-avoid-when-creating-lettermark-logo/