Joseph- I didn’t say cellphones haven’t contributed to OTD issues, nor did I say one students bad influence couldn’t affect others.
What I did say was that no single occurence of a cellphone getting into a classroom ever caused every student in that classroom to go OTD, such that airport style security wouldn’t make sense.
You said that is incorrect. The factual statement “Nobody ever pushed a classroom full of Yeshiva students off the derech because a cell phone got past the door” would be factually incorrect if in fact there was an occasion where a cellphone got past a classroom door and the entire class went OTD. So, please provide the example.
Not an example of a cellphone being a bad influence, which I agree with. Not an example of someone with a bad attitude influencing others, which of course, happens.
Alternatively, you can choose your words more carefully and precisely.
For example, you might say something like this- I believe that the negative spiritual effects can be as dangerous as a bomb on an airplane, therefore we should have airport style (or hopefully better) security at Yeshivas to keep cellphones out.