I've seen plenty of devs and da's do the same. The nice thing about SQL is it's easy enough to create a query that gives you what you want, but at scale it falls flat or purforms poorly. It's easy enough to work through most of the time, but too many lack the understanding of knowing when bottlenecks are likely to happen, and if/when it may be an issue.

I think of more than a couple basic joins in a query to be a code smell.