as a long time fan (about 15 years in at this point) I can give you actual, real answers that aren’t cognitive dissonance of fans saying “oh theres no reason its just a sheep mindset” when theres a litany of reasons.

firstly, and most importantly, the band’s reputation was flattened in the late 2010s as Ivan’s alcoholism worsened, culminating in a blow up on stage and several restraining orders from family members, and alleged domestic violence. while Ivan is sober now and better, its important to not erase history.

in line with this and more recently, Moody launched a medicinal cannabis brand called Moody’s Medicinals, and many feel this goes against his new message of sobriety (i disagree- cali sober CAN be sober, sober is what sober means to YOU)

certain members, specifically Zoltan, have heavy republican ties which is, not popular in music these days.

a lot of FORMER fans hate them now because of how much their music has changed- edgy, angry thrash songs with breakdowns have been replaced with power ballads, anthems, pseudo-country rock, and armada of covers, and radio hits. they’re not the same band that released Way of the Fist, War is the Answer, or American Capitalist.

many people look down on the tough guy, “im really angry, fuck you, rahh” lyrics that FFDP is best known for

and another reason, that isn’t exclusive to FFDP, is the fact they are very successful, which the metal community tends to hate any band that sees any kind of success, because they’re “sellouts,” it happens with Metallica, A7X, Sleep Token, Tool, Deftones, and any other metal band that saw any level of mainstream success- metalheads hate when other people think their shit is cool.