I have no doubt that DAPA/Extended DACA would have been brought back to a full Supreme Court and ultimately enacted had Hillary won in 2016. That of course never happened, but Obama was defending it at every step of the way and I'm sure Hillary would have done the same. This is despite the fact that unlike DACA, DAPA/Extended DACA never saw the light of day thanks to Hanen's Injunction the day before it was supposed to go into effect.

DACA is a completely different story because Trump was actively trying to end it and the courts kept him from stopping it. To say that this EO to preserve it is nothing is just ignorant because it puts the full weight of the presidency and all the government lawyers behind it to defend it. Even when Texas ultimately tries to overturn it, it will be well defended and probably buys it another year before it gets to the Supreme Court...the same court that pretty much said Trump could do anything he wanted to do with immigration but of course we all know that the conservatives there won't be consistent.

TLDR; Choosing to defend rather than actively end is in fact a big deal.