You don't have to be rude for Lu to consider your point. He reads all posts carefully.
The other point you make is very interesting ....
So of all the adverse comments (justified or unjustified) about the safety record of Robinsons in the aviation press over many years, comments by helicopter pilots (informed or uninformed prejudice) and discussions here and around the GA world ..... it's Lu's comments which are affecting your income?
But, whether it should or shouldn't be, isn't the R22 the most popular training helicopter by a wide margin? And aren't Robinson sales going from strength to strength?
Are you
sure it's Lu's comments about Robinsons which make your students concerned about flying in them.
If so, you'll have made an old man very happy.
(Lu, not me.
)