That language is more common than you might think, in our experience. They all want to make you think that your guy is special and that they know something about him. But I think they just buy huge mailing lists. Plus whoever fills out their prospect questionnaire or sends them video is automatically added. Most of these things, I suspect, are just auto-generated.
That said, we have done couple of these. And here's my take, for what it's worth. Some have definitely been worth it -- one got my kid on the radar of a rising D1 program in a really strong conference. This was during an otherwise dreary junior year (kid suffered a back injury and spent almost the entire season on the DL).
The school wrote a nice follow up evaluation, even called his HS coach. Finally, they even came to see him play once this past summer, as a result. (Unfortunately, he seems to have taken himself off their radar by performing badly when they did come.) But that whole thing came directly out of his performance at a camp. He did have some prior exposure to these coaches -- one of them saw him at a Trotsky showcase the fall of his junior year. They wrote to invite him to their on campus camp. We were at first thrilled -- cause they said he had seen the kid play. But in follow up emails they made it clear that they were not recruiting our son, but did see some "Potential" in him. We went to the camp anyway. That was our first one.
Also as a result of his attendance at another multi-school camp, our son got on the radar of a strong D2 program. They followed up with us afterwards to invite him to their own camp. We were skeptical and wrote back to see whether they were serious about him. After some back and forth, it emerged that the coach did think of him as a potential prospect and really did want to have him come play in front of their whole coaching staff. Those were our two most promising outcomes of on campus camps.
The other campus camp my son did, we just did cold, without any prior contact with the coaching staff. We had sent them videos, etc. but had gotten no response. That one seemed totally pointless. The coaches did not really seem interested in MOST of the players there -- though they did tell one player that they would be in touch because they liked the way he played. This one was late in the recruiting year for 2015's -- this past August.
To make a long story short, my experience suggest that these things are most worth it if: (a) you guy is an absolute stud, who will stand out from any crowd or (b) you have had some prior contact with the coaching staff and they are interested enough in you to want to take a closer look, but are not yet completely sold on you.
If neither of those things is true, it's a crap shoot. There will in all likelihood be TONS of good players there. They may be looking for a player or two to round out their prospect list/recruiting class. But mostly the paying customers will be there as paying customer and background noise.
Now I do think they all do hope to recruit some previously unknown by them player out of these camp. But that's in part so they can keep the paying customers paying. So that they can say "every year we recruit players from our prospect camp." Which, if they do recruit somebody is true and not false advertising. But it surely isn't many that get recruited this way.
I suspect that D3 may be different by the way. I think they use their camps more often as both selling points for the school and as recruitment tools since they, in a way, are more open to many comers, since it is not a matter of handing out scholarship money, but attracting good players who can gain admission to their school and help their team.