I don’t think the issue is with the gate itself. It’s clearly meant as a checkpoint to stop vehicles passing through the valley as a pedestrian could walk around it.
They specifically show Obi-Wan going to the trouble of disabling the gate. He can’t power it down with the controls so he shoots the panel. He really must want it down, so you logically assume his intention is to jump back in the transport and drive through, but no he just walks through it. When I watched it I thought ‘well what was the point in that?’ as did many others. It’s very minor thing but the odd logic momentarily pulls you out of the story.
There are several scenes which do this and you shouldn’t have to wildly speculate the characters motives to make sense of it. The story should tell you or hint at it. Vader with the fire was very odd and again it pulled me out the story.
I am enjoying the story regardless, but cannot disagree with some of the criticism here. It doesn’t feel nitpicky. I think there are some issues with this show that could be easily resolved. It feels rushed and it’s a real shame. I really enjoyed Mando but thought Boba was pretty poor too. The quality is taking a dip.