About the Potter Variation of The Scotch Game

In the Potter Variation of the Scotch game, I have noticed that the recurring theme of playing Qe2 blocks in the bishop, and yet is still the best move. What is the point of blocking in the light squared bishop and how am I supposed to develop the bishop in the future? Also, please give me some key ideas about why Qe2 is played in general right off the bat. Thanks.

Isn't that logical? White wants to castle queen side. The queen has more flexibility there.

Although, there is a better line for both players which goes as follow:

The position is given a tight edge for black, but nothing major here.

The idea behind Qe2 is pretty simple here: Giving support for the move e5 and prepares white for a queen side castle. There will be ideas for the light squared bishop later. If you look at the position, there aren't any enemy pieces close to the king except for the dark-squared bishop, but it's role is just keeping the pin on the knight and delay it's movement. White's knights are sole defenders of the king, it would take too many moves to re-maneuver the knights to the king side. There aren't too many places for white's light squared bishop to be useful on. This is why the queen is more flexible and helps defends against some of black's ideas. On the bright side, there aren't much attacking ideas for black either. The bishops for black aren't really serving their purposes yet. The dark squared bishop is eyeing on the king side pawns for white, which is pretty much a useless piece atm, but it does have a good scope. There aren't many places for black's light squared bishop as well to be useful on, well there could some tactical possibilities with the queen being on e2, but in this position, not so much. Black still needs to develop and is lacking some space, so d5 is a must move to be played.

Summary: the position is equal for both players, since both of the kings aren't a target by any of the enemy pieces. 

I start at 7.Qe2 first https://chessmood.com/course/scotch-game 

In #1 it also protects f2 and has ideas of Nc3-d5, which wouldn’t be possible with the Q on d1 due to ...Bxf2+ Kxf2 ...Nxe4+ etc.

There is another reason, Qd2 can lead to tactical issue like this one :

Moreover, it can be useful to  to be on e2, protecting e4, and when u will castle long, u will have your rook in front of black queen.

THank you everyone for their responses. 

i like the name 

This is the position I learned from the Chessable Short and Sweet Scotch. The reason I'm necro-ing this thread is because this is one of the first posts to appear when searched about the Potter variation. One of the reasons I do not like Qe2 is because of d5. One of the main ideas in these kinds of positions is not let black play d5 comfortabley.