DISCLAIMER: I did not read every post so this may have evolved way past the original discussion. But here is my take, the definition of "traditional" doesn't put a specific time frame on it so wheelie bows can be considered traditional by some people today simply based on the amount of time they have been around.
tra·di·tion·al
trəˈdiSH(ə)n(ə)l/Submit
adjective
existing in or as part of a tradition; long-established.
"the traditional festivities of the church year"
synonyms: long-established, customary, time-honored, established, classic, accustomed, standard, regular, normal, conventional, usual, orthodox, habitual, set, fixed, routine, ritual; More
produced, done, or used in accordance with tradition.
"a traditional fish soup"
habitually done, used, or found.
"the traditional drinks in the clubhouse"