This isn't something we have reported with the F28 in MSFS 2024, however, I have found the following thread on the official MSFS forums from users having the same issue with MSFS 2024 in general: https://forums.flightsimulator.com/t/msfs2024-stuck-loading-57-since-patch-v1-1-10-0/680172/105?u=cajolingrain44
Looking at the comment from "Roadswwper1" it would suggest that there may be some sort of aircraft limit that exists in MSFS 2024, and adding the F28 may have just tipped you over that limit. Therefore, it may be worth trying to load the simulator with a Community folder with a few less aircraft to see if that solves the issue.
An easy way to test this will be to rename your Community folder to something like "Community.old", create a new community folder with just the F28 and maybe a few other products/mods installed, and then launch the simulator to test it. If the simulator loads with fewer products/mods in your Community folder, then that may point to the aircraft limit mentioned above.
Hope that helps.
Mark - Just Flight