WHY ZORO VS SANJI FAN WARS EXISTS??

Like I am watching one piece since 2020....And one things that I am not able to understand is why Zoro and Sanji fans fight with each other??? Like I think in the anime,they both mutually respect each other...and we already saw a glimpse of this in wano and now in egghead latest chapter where zoro was kinda hyping up sanji!!!!!.....Majority of the fan wars are based on powers and strength of each other......But I think they both have their particular roles in the crew....Zoro looks powerfull...and sanji uses his brain and strength to win the finght.....So do you think the whole fan war is pointless and just some retards doing timepass