My personal favourite character was an orphan and it definitely helped shape her backstory (She was "raised" by the BBEG at first, then by living on the outskirts of an orcish community after she escaped). The real problem isn't orphans, it's "My character has no ties to anyone in the world". Orphans tend to have families, just not biological ones. Maybe it's a gang, maybe it's the orphanage (Blues Brothers may be one of my favourite movies), maybe it's their dog. If your character can't come up with a thing in the world that they care about aside from getting stronger then yeah, that's lazy.

Don't hate the orphan, hate the apathy.