How do you know this? LAFC is just a marketing term, thy are basically Slammers A teams and the others are their B team just like it always was. As far I'm aware LAFC don't have the ability or care to moved from ECNL to GDA on the girls side. The boys side is a different matter.....
LAFC is not a marketing term. LAFC is a well financed professional club that partnered with a top-end girls club, Slammers, to develop its girls program. Slammers didn't fully fund the GDA program last year - that was LAFC. LAFC has a boat load of resources compared to Slammers.
You are right, LAFC does not have the ability to move to GDA. LAFC's contract with Slammers expires in a couple of years. Unless LAFC and Slammers renew the contract, the existence of LAFC's girls program will be totally independent of Slammers.
I'm not sure why you are saying that LAFC doesn't care to move from ECNL to GDA. LAFC created the program in conjunction with the formation of GDA. It's all about its DA program and was fully-funding the GDA program. I think it is more accurate to speculate whether LAFC would have created a girl's program at all if it wasn't for the creation of GDA. LAFS preferring GDA is also consistent with the rumors that LAFC is looking to join the NWSL.