While the opening paragraph is really good for someone viewing The Force Awakens as a continuation of the beloved Original Trilogy, anyone who isn’t knowledgeable about Luke, the Jedi, or Star Wars in general is going to have a hard time following the crawl, and one of the big reasons for the close mirroring of ANH is specifically to appeal to people who are new to Star Wars. Consider the original crawl:

It is a period of civil war.
Rebel spaceships, striking
from a hidden base, have won
their first victory against
the evil Galactic Empire.

There are no terms here which are particularly hard to understand. It’s very basic, civil war, Rebels, Galactic Empire, hidden base. Anyone can immediately grasp the forces at work.

Even Episode 1, despite focusing too much on the political angle, has a crawl that doesn’t rely on previously-established terms:

Turmoil has engulfed the
Galactic Republic. The taxation
of trade routes to outlying star
systems is in dispute.

Notably, ‘Jedi Knight’ is present later in the crawl, but it is at least well-defined when it appears.

Now take TFA’s crawl:

Luke Skywalker has vanished.
In his absence, the sinister
FIRST ORDER has risen from
the ashes of the Empire
and will not rest until
Skywalker, the last Jedi,
has been destroyed.

There are so many questions here for someone new to the series. I’ll take them in order:
Who is Luke Skywalker?
How was he alone holding back a First Order?
How long has he been gone to allow all this to happen?
How did the Empire fall?
I don’t see a Republic mentioned in this paragraph, is the First Order the only power in the galaxy?
What are the Jedi, and why is Luke the last of them?
Why do they care about destroying him if he’s already gone?