According to this article BL worked at a garden center in NY in 2017 & 2018. He would have turned 20 in Nov 2017. He would have been in NY, not FL.
Brian Laundrie’s former co-worker remembers him as ‘chameleon’ and ‘weirdo’ who sometimes lost temper
According to this article, BL graduated from high school in NY in 2016. In June 2016 he would have been 18. So I don't think he was in FL in 2015 when he was 17.
Gabby Petito & Brian Laundrie yearbook pics revealed after meeting at school
I'm pretty sure the article you linked claiming to show a picture of Brian's teenage bedroom has been debunked. In 2017 when the house was put on the market he would have been in NY. I believe those
may be pictures taken when a tenant lived there.
Regardless, it makes no sense to list a charge on a missing person report that is
1. Irrelevant to going missing
2. No more recent than about 3 years old
3. Possibly a dropped charge since no reporter ever found evidence of it. We certainly would have heard about it if a reporter had found any previous criminal charges.
I actually think MIP means something else on that form.
JMO