Counter: you can be friends with someone who wants to fuck you, as long as he understands boundaries and genuinely likes you otherwise. You both just have to know your place, it's really rare for men to let go of their entitlement and accept it ain't gonna happen but it is possible.
I'm still friends with an ex of mine, and we were friends for years before we dated. I broke up with him due to no spark (so yeah, friendzoned) even though he was really into me, but it was an amicable split and although he needed some space at first we stayed friends. Since then, aside from one early attempt to hold my hand that I rejected, he never once flirted, hit on me, touched me inappropriately, tried to steer the convo to be sexual, made me feel uncomfortable etc etc. Just totally platonic and friendly. He got a new gf, they've been together for ages and although she was jealous of me I could have honestly told her she had nothing to worry about because he was so respectful.