Burt's record is SF1000cc if someone breaks it, they will reclassify it to SPF1000cc. If it is broken again it will be reclassified to SVPF1000cc. It will have to be broken 3 times to remove Burt from the record book. This is what they did when Cliff broke Jess Thomas' record in SF500cc. Records are there to be set (open record classes) and to be broken (existing) records. Who picks and chooses the records that should be left alone? Should Cliff's record be "Untouchable" because he died while setting it? Burt did not die setting his.
Ten years from now there will be technology eclipsing current knowledge, and it will be used to break records. That is how it works, and how it has been done in the past.