This was always the culture. Maybe I’m just too newgen but majority of the top orgs from back then were massive zergs like Legacy and Tax Collectors.
I remember one time me Medium and Katya Love got 11 man raided and we genuinely killed majority just for 3 more to come after flanking pd and kill us. This Zerg mentality has always been a massive part of pvp because it’s simply a guaranteed way of winning; nobody likes losing.
Zerging is practically now required to combat other orgs and pd since the map is massive and other organizations have 15+ people.
I don’t disagree with your argument because there were orgs like MiP, Partabellum, and Grow Inc (made it to top 2 orgs so I count them) that garnerd massive org xp from combat and drugs while only having a set few active members but anyone else relied on numbers. The only reason some people say “V5 was better” is because of nostalgia and their own participation in zerging. The “actual plan” you are talking about probably includes 3 people flanking, 1 as50 posted near the raid , 2 people holding the entrance, and 4 others pushing in.