SFV Light Aerials Question

Hello. I’m new to this forum site and am a fairly new street fighter player, playing SFV now, so you can definitely call me a newbie when it comes to some SF aspects. Getting to my point, what exactly is the purpose/benefit to landing with a light aerial? I know it can be used as a cross-up, but does it have any benefit over a medium aerial? I’m a Ryu main and I frequently watch pro Ryu’s online to learn from them. I’ve just seen (especially JustFog) land with light kick very often and I want to hear exactly why.

Thanks to anyone who can answer my question.

I think Ryu’s jLK can have a trickier hitbox, and as a light attack it also comes out faster which helps in air-to-air situations.