Exactly. Effective communication is what made Feynman a legend.
Sadly, many extremely smart and profound scientists are quite incapable of (or not interested in) conveying clearly their thoughts to general audiences.
It’s actually not that common and a common fallacy. We even have a phrase “the tailors kids have the worst shoes” indicating that experts and geniuses don’t necessarily apply their own logic because application is different from theory.
If this is you, you should find a partner a level or few below you in mathematical/scientific prowess and above in communication skills, who can learn your theories and popularize them.
Ironically Feynman's biggest contribution -- the path integral formalism -- was mainly regarded as incomprehensible until Dyson explained its relationship to the canonical formalism.
I don't think it's his biggest contribution to physics; how about QED?
The path integral formalism or the diagrams, albeit being mathematically obscure at first where quite clear from the intuitive viewpoint once he explained them.
The ones I know who are both capable of and interested in it do not usually have the time to do so, and if they do, it is because they became teachers who sell their output to students.
Sadly, many extremely smart and profound scientists are quite incapable of (or not interested in) conveying clearly their thoughts to general audiences.