Is it some sort of inside joke for anime characters to hold guns wrong?

Yes

Attached: 1555106476195.png (1403x881, 827.48K)

Attached: ss (2014-10-18 at 06.10.05).jpg (131x62, 5.99K)

thats exactly how women hold guns
shitty shouldering, and clearly afraid of it by leaning too far backwards

based Juicy Yuuji