how does the community see tahm kench?

So long story short, the enemy says I am delusional for saying I can 1v1 him late game as a I was the support lol

He says I would do no damage to him and constantly puts me down....that I would do nothing to him with just a wit`s end as my only damage item

So I do duel him and we were both pretty low, he was going to win, it seemed pretty cinematic because as jumps in to kill him, he goes all out on me... ults me and I ate him mid-air I still take the dmg but it looked cool And I survive..killing him as I spit out...my team goes LOL

He went from saying that I would not even hurt him as a support with to saying that I only did 3/4ths of his healthbar and that I am still delusional.....

When I say that all I needed to do was finish rageblade he continues to call me names.....am i the only one who sees rageblade as a multiplier for offensive stats on on-hit champions? because armor is pretty linear more hp, more resistances, they do scale with eachother but its mostly linear and I had mostly armor items with only 1 damage item

Does the community really hate ? What do they see him as? I am i really delusional for making him change his arguement from you arnt gonna even hurt me with that to you only did 3/4ths of my hp

Yes the rest of my build was support items because I`m not that selfish.... I didnt even get the full armor from knights vow because my adc wasnt around....