Crowd sizes comparisons are not normal.
It's like we have forgotten what political campaigns are in normie land. They are GOTV motivational events for your ground troops.
Campaign stops are NOT "rallies". Stump speeches are not ad hoc free form rambles.
Know what IS normal? Musicians.
Fun Jimmy Carter fact (yes, another one) - Jimmy would likely not have been President if not for ABB, Jimmy Buffett, Willie, etc.
https://www.jimmycartermovie.com/