IMO BL is not an experienced outdoorsperson. He's a wannabe.
In general, I don't trust the term "expert hiker", especially when it is proclaimed by family or friends. Invariably, when there's a missing hiker sleuthed on WS, the hiker will be described as "experienced". Looking briefly over their situation and history, they never seem to be.
IMO unfortunately in this case, there is hype about BL being a "skilled outdoorsman", when that's his self-presentation. It may well mislead a search.
Let's keep in mind that, far from heading into the wild blue yonder, BL drove home to momma, and he seems to have needed parental support to (maybe) take to the outdoors. I have a feeling he's in someone's cabin.
Looking at the calendar, when would BL even have learned any outdoor skills? He graduated from HS maybe 3 years ago? Then he worked at Piggly Wiggly, correct? And in their 2 weeks annual vacation (or whatever meager amount it is), he's turning himself into a "skilled outdoorsman"? Ummmmmm, no.
I don't know anyone who's an experienced hiker call themselves an "expert hiker". I' not sure they'd call themselves "experienced", either, now that I think of it. I'd never call myself that. IME they're more likely to say they've had many experiences.