I agree and disagree.
The problem with giving and getting oral is two fold. The first is like anything it does take practice, however various people like it various ways so either one experiences such a plethora of partners and develops a "general' technique or one learns on a specific person ( thru verbal as well as body language) so that they may also progress and become more expert.
The other ( in my mind ) is either simple laxness or time/place constraints. It is a very good way to give/get "a quickie" if that's wanted and desired.
However as stated many just use such to get around the fact that they do not wish to go all the way and choose to "relieve the pressure" in this manner. ( which is a WHOLE 'nother topic all together!)
To me it always has and will boil down to communication between those involved and a trust and openness to share what is really wanted in both giving and getting.
Otherwise as my southern friends say " T'aint no fun no ways."
Rookie Scribe