OK - Morgann - Lets go through the reason why most (if not all) experts prefer not to play stolen bid doubles.
Firstly - lets look at your claim that over 1nt calls are 'artificial'. This is not so. In most conventions the suit bid is natural showing that suit and a 2nd suit.
So for example, for people who play 'natural' over 1nt then every call is natural.
For people who play DONT then each suit bid at the 2 level shows that suit and another suit.
For people who play CAPP 2c and 2d are artificial but 2h and 2s show real suits.
So most of the time even with conventional calls the suit bid will be 'real'.
And even if it is artificial it doesn't matter - responder can still double to show a willingness to penalise that (aritificial) suit. Then when the opps suit is subsequently revealed if either partner subsequently doubles it is for penalty.
Let take the typical example.
Partner opens 1nt - you non vul - opps vul.
The opps overcall 2h in direct seat.
Let's say as responder you have 8-9 hcps and 4 good hearts. You are most likely going to get your best score from doubling for penalty... If you play stolen bid double you have NO penalty option and have to pass or go for 2 or 3nt - because a double would be a transfer to spades.
One of the reasons that the opps like to interfere in your nt auctions is to make it harder for you to find your right spot. Strategically, you need to make them very afraid of stupid interference by whacking them (doubling for penalty) and showing you have the tools to do this. If you play stolen bid doubles you have no penalty options and the opps have a free ride. When I see 'stolen bid' doubles on the cc I make a note to myself - 'interfere on weaker hands - they have no penalty option'...but it says more than that...they in general don't have a method for dealing with interference. Stolen bid doubles on the cc is an invitation to interfere and make bids helpful for the defense.
The major difference I see between weaker players and stronger players is that stronger players will more often move in for the kill with a penalty double...
What I notice is that weaker players tend to have one goal in bidding...to win the contract like it's a real auction and as a result they often 'pay too much'...stronger players have two goals - bid to their right level and make the opps pay for bidding too much. This is the reason that weaker players tend to complain more about 'the cards'.