When majority agrees upon something - in this case whooping 75% is is called consensus, not an attack. Attack would be something done by minority and aimed to destroy.
In this scenario all I see is leading bitcoin to some conclusion and not necessarily to destruction. Stop with the 'attack' drama. Let people choose the side.
I think 75% is misleading as consensus becouse it's 75% of last 1000 blocks not 75% of miners
Because miners are randomly awarded this 75% will hapen with a low % of miners it's just a matter of when the fork will happen
My guess is this will split bitcoin value into 2 coins
Best Regards