That's garbage.
Do you have any evidence of that?
At least some of the people pushing for "time sink" changes seem to be those with Elite exploration according to their signatures. Given the general attitudes I have noted in these forums, it is a fair assumption that the rest already have Elite in exploration (or perhaps have achieved it and reset).
Usually they've improved the balance in other areas, but the changes in 2.3 to exploration were a regression. They should be reverted, and a first discovery increase put in their place.
What changes are you referring to precisely?
2.3 Release Notes said:
Exploration
• Rebalanced the amount of exploration career rank awarded when completing Passenger missions
• Stopped awarding First Discovery bonuses of zero credits
• Fixed transaction server error when purchasing exploration data for certain systems
• Increased the credit values of exploration data for scans after this release. Unsold data from previous scans is unaffected by this change.
If you are referring to Passenger mission Exploration rank rewards and increased rewards for normal scans, they seem to be reasonable changes.
I presume the zero credit first discovery bonus is referring to asteroid belts which always seemed a bit off to me. I rarely bother with Asteroid belts myself unless I am considering using the target area as a mining zone since they have been a zero reward item for as long as I can remember.
I do not believe that reward focus should be centred on First Discovery since that penalises newer commanders too much....
As for the Passenger Mission effect on exploration rank - I am ambivalent about it. I see no valid reason to object to it though.
I think it has been a long standing complaint that progression in the Exploration rank has been too slow. If increased rewards for scans in general and increased progression via appropriate passenger missions achieves the rate of progression that some would like to see then I am not going to object. It took me a long time to get to my current Exploration rank and I see nothing wrong with newer players being able to achieve similar or greater rank faster.
Overall though, the kinds of "major overhaul" level changes being proposed are inappropriate IMO - too much water has passed under the bridge for the scale of changes some people seem to desire.