I actually had to think for a while before I decided whether or not I agreed with you on this, but I think I do. During the year I was in RCIA, the candidates were all encouraged to get in line and recieve a blessing, and I found it an important way to connect tangibly with my new faith. That said, one Sunday I found myself visiting Chicago and, not knowing what else to do, I got in a line with an EMHC, crossed my arms over my chest, and then…we both stared awkwardly at each other for a couple minutes, I went back to a seat much further back than I had been sitting before, and quickly ducked onto a train as soon as Mass was over. I was horribly embarrassed.
The blessing seems appropriate for small children with their parents, and I do see a value in it for catechumens and candidates - but only if it is fully understood (I certainly didn’t understand it). Besides, the blessing of the catechumens before their dismissal during the Sundays leading up to Easter is far more meaningful, with the congregation joining in prayer for the same specific purpose.