So this is a thing I’ve noticed while watching this lesson and I wanted to do a heads up for people who have the latest version.
I got Blender around a week ago, or so, so I think I have a bit newer version than 2.9, because I couldn’t find Merge Vertices in Vertex Tab.
Got confused, but figured since the original course was on 2.8, the misplacement would be covered in 2.9v, but it wasn’t. Eventually, I found Merge Vetices by clicking Right mouse button on the vertex points.
The shortcut has also changed. Instead of Alt+M it’s now just M.
Hope this helps to those who run into the same problem.