Every lacrosse player I know who has been recruited has been recruited through showcases with his or her club team. That is my experience.

In the example you cite, you state the coach referred his player to a recuitment camp. I don't consider that being very involved in the recruitment process. Then you state that the college coaches reach out to the HS coaches, which again, is not the HS coach actively working on recruitment for the students. Parents, IME, drive a lot of the recruiting process, FAR more than HS coaches.

My feeling is that unless your team goes to states there is going to be little attention paid to it by colleges, and even then it's going to be primarily local coaches.

But hey, I'm all ears. If a bunch of people chime in here with stories of HS coaches proactively working on getting their players recruited, I'm all ears. And ready to let my kid's coach know. Haha.