On any reddit site you will certainly be banned if you state openly that you believe Einstein's Special Theory of Relativity may be false, whatever your reasons. You will be accused of being an antisemite, a flat-earther, a science denier, a fool, an ignoramus etc. etc. etc. This includes physics sites, mathematics sites, chemistry sites, philosophy sites, history sites, science fiction sites, fantasy sites etc. etc. etc. This, despite the fact that the discovery of Dark Matter indicates that 90% of the matter in the universe is totally invisible, so, we have no need whatsoever for space and time to be related in order to explain why light acts like a waveform in a vacuum, which is the primary rationale for Einstein's Special Theory of Relativity. Dark Matter is the elusive "aether" in the vacuum of space, the material that controls the speed of light waves in space. Basically, the entire scientific and academic communities are terrified of the fact that they really have no idea what's going on in the Universe, at all, so they're going to stick to Einstein and Relativity, at all costs! Even a lousy theory is better than no theory, at all!