There's not that big of a gap as the description suggests. "In my opinion", the gap or convergence point would be at the equator. Which "coincidentally" is also where the geostationary satellites are.
I'm not really clear what you mean. What exactly is converging at the equator? What is the 'gap'? Are you agreeing that flux lines are roughly parallel to the earth's surface, or not?
I'm pretty sure that the areas where they claim the magnetic poles are are inaccessible areas where there is zero human activity.
They aren't popular holiday destinations, for sure, and you might use the word 'inaccessible' to describe how tricky it can be to get there, but it doesn't mean it can't be done, or isn't done. For example:
You can row to the mag North Pole, at times:
https://en.wikipedia.org/wiki/Old_Pulteney_Row_To_The_Pole#:~:text=The%20Row%20To%20The%20Pole,Arctic%20Ocean%27s%20floating%20sea%20ice.https://www.theguardian.com/world/2011/aug/26/british-crew-row-north-poleDid these events not happen? Or did they happen, but the crews are in on it?
You can pay for guided expeditions to the mag North Pole too:
https://www.arctic-world.com/magnetic-north-pole-ski-expedition.html...and people do it for all sorts of reasons, in this example a charity:
https://truepatriotlove.com/get-involved/expeditions/the-magnetic-north-pole-a-trek-to-the-top/You can also sail to the southern magnetic pole, and people do:
https://www.heritage-expeditions.com/captains-log/shokalskiy-sailing-over-south-magnetic-pole/You can, of course, also visit the geographic South Pole, but that's another thing altogether.
https://www.steppestravel.com/destinations/antarctic-continent/how-to-pick-your-antarctic-voyage/So therefore, no one can confirm this supposed location (and they never tell you the current exact location, by the way)
Except...they do, don't they?
https://www.ncei.noaa.gov/maps/historical_declination/Better hurry up on your trip to the mag North though, it's getting harder to get to every year. The south mag pole is getting easier though, as it's heading north towards Australia.
or supposed displacement. You just have to believe it like the rest of the authoritative claims about our world.
That just simply isn't true. It might not be within your ability to go there yourself but there are plenty of things you can do to verify a lot of this stuff. You can, for example, very easily verify that the earth's magnetic field is changing - just take an accurate bearing of a distant object from a known location, wait a few years and then do it again. It will change, and the change itself can be checked against global records and models like the one I've linked to above.
Likewise, you can easily verify magnetic dip for yourself, if you want to. You just need an unbalanced (ie not corrected for local dip) compass needle - make one yourself and measure the dip angle. Again, you can check it against the models. You could ask a friend who lives some distance away, ideally at a different latitude, to repeat the experiment and compare notes.
Back to the original point though...even if we discard the fact that people can and do go to the mag poles, your proposal still requires that the magnetic poles are at the centre of the tropical and equatorial circles. I'm not really clear where you think the mag poles are - you claim that the geo poles are arbitrary, bit they are located at the precise centre of the aforementioned circles. So are you saying the mag poles are neither where they are claimed to be, nor at the current geo pole locations? And how does your theory work if the mag poles move? Or are you saying they don't move?