No, they just won’t be in the “modern era”. Every sport that lasts goes through this, eventually they have to realize that “all time” covers a time period that no living person remembers so they make a cut off point and declare the “modern era”. In the NHL currently it’s when the league went from 6 to 12 teams, which is nearly the same time as the first SB. Figure pretty soon the NHL will change the “modern era” to be the WHL merger which changed the league. Meanwhile the NFL will drop the first 10 SBs from the “modern era” partly because it’s a long time ago and the league did change dramatically in the 80s when things got a lot more pass whacky. The might delay the redefinition for until LV or so and make the salary cap era (a phrase already heavily used) the “modern era”.
That’s just how it goes, eventually everything stops being modern. The SBs will remain, and the count will continue, but a whole bunch will no longer be considered to have happened in the modern era.
I'll leave it at that.