The inventor Nikola Tesla did not believe in relativity, and in 1935 he denied it, despite the fact that there was overwhelming evidence in favor of this theory. He also wrote poems calling Einstein a madman with long hair.
Einstein's relativity work is a magnificent mathematical garb which fascinates, dazzles and makes people blind to the underlying errors. The theory is like a beggar clothed in purple whom ignorant people take for a king ... its exponents are brilliant men but they are metaphysicists rather than scientists. ”
- Nikola Tesla
His poems about Einstein
"Too bad, Sir Isaac, they dimmed your reputation
And turned your great science upside down.
Now a long haired crank, Einstein by name,
Puts on your high teaching all the blame.
Says: matter and force are transmutable
And wrong the laws you thought immutable. "
https://en.wikipedia.org/wiki/Fragments_of_Olympian_Gossip
His question of accepting the curvature of space-time does not arise because he does not respect relativity. In 1936, he claimed to have received a new theory of gravity, called the Dynamic Theory of Gravity. However, the details of this theory never came from him, but general relativity has been proved in every experiment.
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