I am in the first camp
If there a fly fisherman struggling to catch fish but most important they practice catch & release, sure I will offer my two cents worth and give them fly I am catching fish on.
Back a few weeks ago there was this family down on the river, the husband was fly fishing and not catching anything. I walked over to them and struck up a conversation while WarrenP was trying to get his number 20th fish (didn’t happen by the way…LOL). After talking a short bit I found out they just moved in town and this was new water to him, so I pulled out a Fluorocarbon furled leader a fly I was catching fish on and hooked him up. Within 10 minutes he caught his first fish. During our conversation I invited him to our next fly fishing club meeting and lone behold he was there at the club meeting. It feels good to do a good deed and hopefully everyone will pay forward. I have found out over the years fly fisherman are the most helpful on the river and willing to give advice if there not part of that upper elite group.