It’s not just the feminist nonsense. In the first movie, when Kenobi wanted to duel Vadar he had to get in a spaceship and travel across the universe to do so - in this movie Luke just astral projects himself to the scene of action. It’s crap like that which also makes people reject the current abomination.
In the first movie, Kenobi didn't set out to duel Vader. Rather, he traveled to Alderaan with absolutely no intention to confront Vader, was astonished to discover that the planet had been destroyed, and was then tractor-beamed in by the Death Star. However, he did duel Vader for essentially the same reason that Luke later (apparently) duelled Kylo Ren: To distract the antagonist and allow the heroes to escape. (Only now do I realize that "The Last Jedi" recycled that plot point!)
Second reason: Vader (at least, the Vader of the original trilogy) was no fool, and wouldn't have been deceived by a "force projection," so Kenobi didn't attempt it.
Regards,