If anyone expects to just buy a miner turn it on and just make money then they are sadly mistaken. I am a ordinary person who was clueless about mining too, but I wasn't lazy and just expecting to turn my rigs on and make instant profit.
The things I have mentioned should be also brought up at these events then rather than just flat out say "Don't bother".  All the organisers would have to do is give a few links out too sites like these and a few exchanges.  And just tell them to do some homework/reading before heading off into the crypto world.

I read and studied the markets before I headed in, that aint luck and skill that's just using your brain and not stupidly walking in blind or being too lazy like 99.9% of the crypto world noobs do.

What's the point of doing events if the organisers just end up saying it is not worth it?  Why bother doing events with that attitude?