Sorry but there are several large holes in these theories.
Ysmir is more than the Nordic aspect of Talos. You're quoting from
Varieties of Faith In the Empire and that quote is limited in context in that it means the god Ysmir is the Nordic aspect of the god Talos. Ysmir in the broader sense is a name granted to others than Talos, including Wuufarth as the Ash King/Underking, and, if you're a literalist, Pelinal. It's akin to a person being given an ethnic name by people of that ethnicity out of a sign of respect and reverance.
Depending on what source you look at, Talos was his original Atmoran name or the name the Nords gave to him after he defeated the Breton and Nord armies at Old Hrol'Dan, but it wasn't bestowed upon him after his apotheosis.
The Towers of Nirn isn't a lore source. It's pseudo-lore, i.e. not lore at all. It's based on the writings of Michael Kirkbride known as the Nu-Mantia Intercept, also not a lore source. The only towers established by the lore are the Direnni Tower, aka the Adamantine Tower, the Crystal Tower, the Ceporah Tower (completely ignored by the psuedo-lore source), the White Gold Tower, the Brass Tower (which is another name for Numidium and not an actual Tower) and the Red Tower (which was only a tower by metaphor). There is no Snow Throat Tower in the lore. There is a reference to the Snow Tower in the Prophecy of the Dragonborn but as noted later in your post it's a metaphor for Skyrim and the Throat of the World is merely symbolic of Skyrim.
Even in the psuedo lore source there is no "Khajiit" tower. Both the Direnni Tower and the White Gold Tower are still standing.
The popular player belief that the Thalmor want to unmake Mundus in the hopes of joining the divinity from which they were separated from by Lorkhan is also based on writings of Kirkbride but those writings are also not lore. The only thing the lore establishes is that the Thalmor want to rule over all of Tamriel as the Altmer did during much of the Merethic Era.
There is nothing in the lore to suggest that there is a way to the Throat of the World through Markarth let alone that the Thalmor are there because of it. The notion on the face of it is a bit absurd given the distance between the two locations. I'm not sure why you're putting quotes around those statements either. Who are you quoting?
Strundu’ul means Stormcrown, as in Talos's name translated from ancient Ehlnofey. It doesn't mean the Jagged Crown or the Crown of the High King. According to
The Arcturian Heresy Talos earns the name due to the fact that there is always a storm above him favoring him in battle during his military campaigns to build the Third Empire (i.e. the Storm Call shout). The Greybeards tell you that the words are a traditional greeting to a Dragonborn who has accepted their guidance. The reference is to the long passage of time before a Dragonborn arrives to learn the Way of the Voice and wield the power of Strun Bah Qo. It has nothing to do with the Dragonborn being endorsed by the Greybeards as High King of Skyrim. The notion that a standard greeting for Dragonborns who come to learn the Way of the Voice by a faction that (1) has no authority to appoint the High King and (2) are sworn to stay outside of the politics of Skyrim endorses or legitimizes the Dragonborn as High King is counter to everything that the lore tells us about the Greybeards, the position of High King, and what the Stormcrown is.
The bug in a jar conspiracy was meant to be a joke.
Please try and understand that citing something off of a wiki site or any other internet source does not qualify it as lore. The internet is filled with misinformation. Lore is only information derived directly from events, quests, documents, data files etc. from the games and other media acknowledged by Bethesda as canon. If you find an internet source claiming that something is lore and there's no citation to content to either of those you should consider it suspect.
