Sadly, I fear the answer to that is "yes"
Jumponium was an excellent solution to increasing jump ranges. It required pre-planning and not a small amount of thought to use effectively. It also meant that whilst it opened up new limits to the galaxy, they weren't quickly tagged as those of us who went out there couldn't realistically visit more than a handful of the new available systems. OTOH,. simply increasing jump range - and by a huge amount at that - will pretty much kill off all long range exploration within a few months, if not weeks. There will be lots more sightseeing (easy travel always boosts tourism) but forget about actually discovering anything new other than via the blind chance of the proc-gen RNG for which you might as well stay within a few thousand LY of Sol.
Furthest from Sol: done
Furthest north: done
Furthest from Sag A*: done (pre-Engineeers at that)
Furthest East, West, South, Up & Down will be done soon.
Let's face it, actual exploration (ie going places no one has been before) has all but been completed. All that is left now is the detailed surveying & cartography.