Indeed, when you position your film with an applicator and especially after taking care to clean your screen (/! \ Applicator and cleaning cloth not included), bubbles form automatically during installation despite the applicator (I am however very careful) and when you want the "chase" you scratch your protection made that there is no film to remove "over" after installation. Besides protection before installation already has micro-scratches.
Well, of course considering the price of the article comprising 6 protections, we should not expect miracles. But if you like the graphics of your console, they will be less beautiful because of small bubbles impossible to remove.
My screens are still protected but will often change the protections that get damaged quickly and the quality / price ratio declining fast thereby. Too bad. The same as it is for New 3DS and 3DS XL New.