Progz were mostly for annoyance and were either released as one purpose programs, such as a punter to boot people offline, or a fader to color text in chat when colors were introduced, or an OH Scroller that scrolled endless text to disrupt chat (you would run these on hacked overhead aka "OH" accounts used by staff that didn't get auto-booted for scrolling). Some progs were sort of All-In-One programs where they had maybe a punter feature, a fader feature, etc. These all in one progs usually had a bunch of useless stuff like an "echo bot" or "trivia bot" or whatever. Some had more nefarious purposes like termers which were used to get people's accounts terminated. Things like punters and termers were usually short-lived as AOL would catch on to whichever method they were using an patch it.
The article talks about the open-source sharing nature of progz, and maybe that was true for the folks who lived in the vb private chats or who released their BAS files (dos32.bas was my first ever intro to coding), but many in the hacker scene were typical teenage boys who would constantly try to one up each other and prove how leet or oldschool they were...and new methods weren't always widely shared. The biggest status symbols for AOL hackers were leet screen names, like "Boss" or "Hack". Even more leet were 3chars which were the smallest amount of characters in a screen name and thus hard to get. The leetest of all were restricted names that had banned words, like "FuckAOL" or were only 2chars like "DJ", or indents like " MrLeet" since they were seemingly impossible to make.
In order to get these screen names, hackers would find ways to steal account information to reset the passwords, or use tools like Sub7 to infect users and then steal their passwords. More technically savvy hackers would exploit holes in AOL's systems such as the "sign up" page which was the source of a really famous hack in 2000. Other hackers were adept at finding ways to convince AOL to terminate an account for supposed threats. Because of this, most AOL hackers had an extensive numbers of <>< or phished accounts to avoid a rival hacker from terming you "perm" account which was usually paid for by your parents. The term phish and its associated progz, phishers, phish tanks, etc., were actually coined on AOL.
Some guys from the scene are legendary. One guy who used AOL on a Mac would often find exploits only he could use, including one where he stole pretty much every 3char name available. Rumor has it he went on to create a very popular online game where users are slithering snakes. :-)