No. You should give more clear communication. You can’t be vague in a congested traffic area.
Rarely is there a single point of failure. Just like any accident, especially in aviation, there are at least a couple links in the chain that were broken. You can’t only look at one element, place blame, and think you fixed the problem.
I agree the chopper wasn’t at the correct altitude, but again, especially with aviation, you need to correct all issues so it doesn’t happen again. Vague communication bites you in the ass more often than you think.