To each their own, but the puzzles you linked seem really convoluted compared to regular Sudoku. The last puzzle has no fewer than 9 custom rules, in addition

To each their own, but the puzzles you linked seem really convoluted compared to regular Sudoku. The last puzzle has no fewer than 9 custom rules, in addition to the regular Sudoku rules, and then it also says “every clue is wrogn [sic]” implying there is some meta out-of-the-box thinking required to even understand what the rules are. That is more a riddle than a logic puzzle. By contrast, the charm of classical Sudoku is that the rules are extremely simple and straightforward (fill the grid using digits 1 through 9, so that each digit occurs exactly once in each row, column, and 3x3 box) and any difficulty solving comes from the configuration of the grid.