Strength and weakness of scandinavian defense

An exciting game. 3.Qe6+ is unwise by black, but white did not find the best way to highlight this.

The game was too poorly played to show anything about the strength and weakness of the Scandinavian Defense.

Strength:

• A provocative opening
• Black opens the game immediately
• Usually both black bishops have freedom

Weakness:

• After the capture 2.exd5, Black loses time recapturing
• Usually the white d-pawn will go to d4 afterwards, giving more central space
• Because Black loses some time, he is in danger of a quick knockout

I copied from Chess.com's openings..

 3 ... Qe6+ - Adventurous move. I do not play like that, but it's interesting ... I like Scandinavian defense.

Join the 3...Qd6 or the 2...Nf6 Scandinavian Club at Chess.com. These are probably the most active clubs for this Defense. 

why not white play Queen = A8 one move earlier and why black not played knight f2 forking rooks and Queen?

GM Larsen called the Scandinavian an improved Caro-Kann.
https://www.chessgames.com/perl/chessgame?gid=1068107 

I play the Scandinavian but I just play the modern version with 2.Nf6 leading into attacks, gambit or just solid positions. The main line is good but I don't rly like the idea of moving my queen early