Guy is often on the right track, but I don't agree here. Pushers cover a broad band of players that value making shots and placement over sheer power.
Many are branded pushers due to putting a lot of spin/work on the ball for most shots, with some sacrifice of big pace. Mostly likely somewhere inbetween is going to work best really.
As with any debate the involves pushers - the problem here is the definition. Unfortunately 'pusher' has become the default complaint of losers. That is if a guy hits with massive topsin instead of hitting winners he is a pusher. Thus Murray is a "pusher" and Nadal is a pusher and so on..
But the old school defintion of a pusher is a guy who hits with stilted incomplete strokes and just blocks the ball back and/or uses gravity to win points. (sometimes they have a little topsin - other times underspin).
So no they will not adapt to using 'real' strokes because in the short term swinging out does ABSOLUTELY not help them win.
Most of these players are bit older and enjoy beating the 'real' tennis players and aren't really even trying to improve.
Bashers generally have a big forehand and try to rip everything. The guys might lose alot - but with some tweaking they could be good, IMHO. They are taking too much risk with every shot - and aren't really interested in rally balls. But the fact they can actually hit nice tennis shots moves them ahead of the pusher.
Its more important to build good technique first. If you put the emphasis on trying to win the 'pusher' result is sure to happen.
The women's serve is perhaps the best example of this. Most women don't serve well - and so you will meet women that just dink it in. This is actually an easier pattern - and leads to alot more points (some of them get 'good' at it and just dink it over the net and watch people try to crush it and fail).
But you will NEVER develop a good serve like this. If you want to develop a good serve you need to either practice off court or have the ability to suck up some double faults.
It's the same with all the strokes. There are 'dinker' techniques that are easier to execute and lead to better results in the short term.