I personally don't know anyone who "hated" Linkin Park when they were still at the forefront the rock/metal music industry. Pretty much everyone I grew up around (friends, siblings, cousins, etc) were into LP to some degree. The only people I've seen complain about LP were trolls in 2009 era Youtube comment sections haha. They just hate whatever is popular BECAUSE it is popular. LP went through a pretty "pop" oriented transformation later in their career, but to me that is maturity and not something objectively worthy of ridicule. I think most of the ridicule stemmed from former fans who didn't like their new/current sound at the time lol.
Either way, the "edgy" lyrics really connected with me in my teen years, but in my "kid" years (elementary school) I just loved the music for what is was. Alternative heavy metal, nu-metal, "rap rock" whatever you want to call it was cutting edge stuff in the late 90's/early 2000's. I remember my older sister had the Hybrid Theory and Meteora albums and I used to listen to both all the time on her CD player/boombox. I think of those albums as "soundtracks" to my youth, and totally defined those years for me. Same goes for bands like Evanescence, Tool, Deftones, Korn, etc.