Hey Scott, The whole purpose of the Beginners Learning Track is to help you improve your knowledge and playing skills and prepare you to move to the next level. @BanjoBen 's lessons are pitched to encourage you to challenge yourself.
You ask
With study and practice - Yes I do.
I have a question for you. Have you put in the study and practice to take on this challenge?
The only reason the tune sounds fast is because there are a lot of 16th note embellishments. Maybe you are not ready for this.
As to Ben showing off. In all the years I have known him, when it comes to teaching a lesson he never shows off unlike some other teachers I have worked with.
If you use the right tools, as recommended i.e. TablEdit/TEFView to play the TAB TEF file you can slow it down to match your skill level. Help you improve and develop your skills and help you to build speed into your playing.
I hope this is helpful as well as encouraging. I have faith in you Scott. You can do it!
If you start now you should have it mastered by Christmas