I kinda don’t think those were venues (for GWB) that could hold 10,000 to 20,000 like Trump gets and with thousands more hanging around in hopes of getting in...
Well, your first four words were correct...after that, not so much.
You don't actually know (as is typical with most FR comments lately), but felt a strong need to offer a challenge to the comment.
FYI - the GWB event in 2004 was held at the Wisconsin State Fairgrounds where 10,000 or more waited for hours in a line that extended for more than a mile (remember this was the first election post 9-11, so large-scale event security was in its infancy).