Thinking on it, there is one compelling reason why players, new players in particular, would prefer to use an ADS over the FSS: the latter is unintuitive. This isn't just anecdotal "evidence" based on my observations (only around 10% of the players I've hosted in MC before I gave that up did either know how to use the FSS, or could figure it out), there's also the fact that the FSS even has an in-game tutorial. In interface design, if you need to explain your interface to users, then it's a bad one.
Compare that to how many other interfaces needed to have an in-game explanation as well.
What might help new players would be if firing the FSS hardpoint would bring up the interface instead, and the need to honk were removed.
Compare that to how many other interfaces needed to have an in-game explanation as well.
What might help new players would be if firing the FSS hardpoint would bring up the interface instead, and the need to honk were removed.