As far as you heard the pay is not good..... That all depends on where you work, in the United States it is one if the highest unskilled paid jobs (considering the alternatives) because while the base pay may be low, the tips are in general quite good. When I inquired about it out of curiousity a few years ago, people were talking 60K+ USDollars. I do not know where pay has gone since.
As far as improving your game, I would think it would---but over many years of observations, it seems (just in general--not always) that dealers are the worst players. I always salivate when I hear dealers play a game. Of course, there are many dealers who are excellent players as well.