I just looked at that area where they want to build the interchange. They've got some construction machinery dealers, a horse trailer dealer and a place to store your boats and RVs.
https://www.google.com/maps/@29.2352288,-82.1902156,975m/data=!3m1!1e3?hl=enIf they can get through the limerock mine, maybe they can connect 49th Street to 35th Street Road. Somehow I've got the feeling that's what they want besides the Buc-ees.
I saw the red and blood red for I-75 on Google Maps from Micanopy south to Ocala and orange at Wildwood on October 16 when we were headed back to Tampa from Middleburg. Traffic congestion is now routine through Ocala and especially at the Turnpike north end. I opted to avoid all of it that day, staying way to the east on SR 21, then shifting over to CR 21 and CR 315. Ended up bypassing Ocala via SR 40 and SR 35 to Belleview. CR 475 then to SR 44, which crosses over I-75 by CR 466:

Traffic was still sluggish southbound at that point. I-75 was fine south beyond the Turnpike.
Normally when I drive up north, I don't go on roads like these unless I want pictures of something on these roads, with the exception of SR 40. Your ordeal, and the photographic evidence has made me reconsider my next journey. When I drove to Folkston, Georgia back in March, I took I-75 all the way to SR 26 in Gainesville. That was because I wanted pictures of the rest areas near Paynes Prairie Preserve State Park, SR 26A, SR 121. parts of Lake Butler, and the Baldwin Bypass, among other sites. I still want to go to Folkston soon, and back home to the New York Tri-State Area someday, but it may be time for another way to get there. And no, I'm not going straight out to I-95.