Top kingdoms including Abs kingdoms did often bottom feed on smaller kingdoms but this was never anything organized at an alliance level. The game play was founded on the big fish eating the small fish and the whole "serial war kingdoms of similar size for wins" thing was a later feature and a significant change from the original game design. The smaller fish did have good ways to fight back though in the old days as well without fear of being trapped in a farm war they didn't want. Either way, yes kingdoms in Absalom bottom fed and other such things, but these were kingdom actions, not alliance actions.
Absalom kingdoms never farm warred each other or even farmed out to each other out of war to help each other crown. This was the topic here and it's something that Absalom kingdoms have never done despite the numerous opportunities to do so and give an ally a crown over the ages. People complain about Absalom a lot, but the number of real alliance issues worth complaining about are actually quite few. Sure there are some real complaints like from Elit and the Sonata crew but that was only after a ton of unprovoked **** done by them including deal breaks, gang bangs, and hacking and deleting of competitors provinces to name a few. Most issues are simply 1v1 fights/disagreements with a kingdom or kingdoms who were in Absalom that people choose to associate with Absalom rather than the kingdom. There was also a NAP effect problem created by a number of top kingdoms being NAP'd and therefore limited in targets and this was a real problem especially when most ages there was also a second large top alliance with a similar NAP effect.
If you look back on the charts you will see a significant number of ages where numerous Absalom kingdoms are in the top 10 but the #1 kingdom is not. I think this is most irrefutable evidence that Absalom didn't farm allies up to crown and also didn't gb competition down to crown just because they could. In fact, a strong kingdom not in Absalom typically had an advantage over an Absalom kingdom in charting despite what the average outsider may think especially in later ages. Having targets to war/farm was critical to a good finish and a strong Abs kingdom could never farm a weaker Abs kingdom. A non Abs kingdom could work out a cf deal with the strong Abs kingdom and farm the weak Abs kingdom to position themselves for a crown. This was a real advantage and was exploited well by some kingdoms for crowns.
As for HoH, when they were allied with Abs I believe they won the most crowns of any kingdom during that time including any Abs kingdom. Prior to their alliance with Absalom the modern HoH kingdom had never even been a crown competitor (old incarnations of HoH had.) Not to take anything away from HoH's accomplishments, but the general consensus in the ages HoH won was that Rage was the stronger kingdom. If you think HoH was a blocker kingdom so Abs could secure the top spots while HoH didn't crown, you have a misconception of history.
Also, Absalom is not the topic here, Absalom hasn't existed for many ages, and it simply didn't do what the topic of this thread is about. So back on topic please.