Previously reported NES Tetris accomplishments did not involve modifying the game to bypass an extremely difficult part of that accomplishment. Fixing a score display bug makes almost no difference to how the game is played. Similarly, playing SMB1 on a keyboard makes very little difference to how the game is played. All the challenges of the original game are still there.

Wrapping the level counter on Tetris Gym is difficult and impressive. It is not however the same thing as wrapping the level counter on the original NES Tetris, which is what every reasonable reader who's not involved in the Tetris community will interpret "NES Tetris" as. Tetris Gym was accepted as standard before people could reach the crash levels. The fact that it previously made no real difference does not excuse continuing to call it "NES Tetris" now that it does make a major difference.

I guess I personally care much more about what the tetris community counts as NES Tetris than what other people think.