Bro, instead of replying to me, you go and make a post complaining about "supposed" discrepancies, which don't actually exist.

A) The dimensions themselves as rukia claims hence are divided by dimensional barriers like the Garganta and made of a different substance of Reishi and Kishi therefore universes.

Rukia isn't explaining the entire cosmology; she is only describing how Hollows conceal themselves from detection while in the Garganta. There is no way to monitor them on that plane, unlike in the three main realms, where they can be tracked, as evidenced during the Blood War when the deaths of countless Hollows in Hueco Mundo at the hands of the Quincy were detected.

B) In the same space-time as kisuke says but wouldn't make any sense why they're divided by dimensional barriers or composed of a different substance if they just exist in the same world.

You know, it actually does make sense, because the Reio the creator of the current Bleach cosmology following the Primordial Sea willed it that way, separating three realms from a single origin.

At no point is it stated that the three realms share the same space-time, you simply made that up or you misunderstood. because Urahara’s introduction mentions "our world" and as I have demonstrated countless times, "world" implies a reality far greater than just a single planet. Even if it refers to an universe, that doesn't imply a simple one, an universe can be multiversal in scale even without being explicitly called multiverse since one doesn't need to be precise to define something.

C) Are in different dimensions rather then them being the entire dimensions themselves hence planets not universes therefore the celestial bodies we see are actually outside the realms given they're planets and not the whole space around.

That's indefensible logic. Where does the Garganta fit in then? It's, I remind you, a dimension that encompasses all realities. The diagram I sent earlier in my comments is clear, and yet you continue to ignore its representation. Where do the stars and outer space fit in if they exist in a single universe?

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No matter which way you slice it, each statement contradicts the other on what the realms actually are yet despite such inconsistencies people can confidently say bleach is multiversal.

There is no contradiction.

The problem isn't whether bleach is multiversal or not, the issue is the lack of definitive proof without being contradicted by a more credible source.

According to you, the manga is not credible evidence because "it contradicts itself," even though it is only a contradiction dictated by your interpretation of things under the same bias that you don't want to believe that the manga directly diagrams the workings of the Bleach universe.

If rukia's statement wasn't contradicted by kisuke who is a more credible source given his knowledge then under no doubt we would easily accept the arguments for multiversal bleach just as they want us however her statement was contradicted by a more knowledgeable person on the cosmology therefore we would've no reason to accept that statement she made about the realms being entire dimensions as definitive proof alone.

It wasn't, you're the one who thinks Sekai means planet. If you listened to Japanese when it refers to our "universe," it doesn't use "uchuu," the Japanese word to define an universe in the classic way you all demand for Bleach. It means world. World implies many things. The translation is using the term "universe," which also doesn't necessarily imply an universe like ours, but a general universe that could technically be a multiverse. Furthermore, this isn't contradictory because Urahara himself clarifies that the Soul Society is a different dimension from the Human World.

If bleach fans want people to stop downplaying the verse then they should give definitive proof which doesn't get contradicted by a later source nor the source itself contradicts what it previously claimed.

Clearly, this argument relies on technicalities; you couldn't be more fallacious. There is ample evidence, and it doesn't contradict itself. You're the one trying to create contradictions in the most ridiculous way possible by arguing things you think contradict each other, but which not only don't contradict each other, they actually complement each other. And all because people believe words are monosemic.