This real world usage of LLM's favorite word shows why LLMs pair this word with "what I'm about to say is seriously unreliable".
Here, "honest description" means the author didn't make something out to be more than it is. Perfect.
Ironically, LLMs don't apply that to the thing they're describing, but to their description itself. Meaning: when they say "honestly" it flags they have no idea and are about to be lazy, make it up, and confidently assert nonsense.
It's easiest to understand if you mentally insert a phrase:
"Honestly [you should disregard this because I am just making this up but], you made a great choice."