I had a look at the sources for that post and couldn't find anything showing small banks growing up to 2008. https://fred.stlouisfed.org/series/US1NUM https://f

I had a look at the sources for that post and couldn't find anything showing small banks growing up to 2008. https://fred.stlouisfed.org/series/US1NUM https://fred.stlouisfed.org/series/US1NUM (from exploring citation #4 in the post) was the closest I could find and that shows that over the long term small banks have been in decline since the 80's.