Well said Satan.
Well, there are 2 stances about first-time airsofters using sniper rifles (yay).
1. It is not recommended because it can be a boring role at times. It may give a new player false pretenses about airsoft as a whole. Often, first time snipers don't find the role suitable and give it up.
and
2. It IS recommended because often sniper rifles are the cheapest, most practical airsoft guns. You don't have to use electricity or buy alot of bbs. Its a "basic" starter gun that can help you learn about the game without spending a ton of money and making a commitment.
Honestly, I think any AEG and sniper rifle are both great starter guns. Its just a matter of preference at this point.