That's not meaning. That's individual growth. The outcome of the game is irrelevant. The players all know it. They play for their own reasons not to win.1. The impact is that you challenge yourself and find out how good you are. That is the VERY ESSENCE of sports. All the rest, including fans, records, trophies and titles, are superfluous. It's the same reason why your beer league games matter.
2. If a four team playoff makes all the other bowl games irrelevant, then why weren't most bowl games irrelevant for the past 100 years? For example, why wasn't the '94 Rose Bowl irrelevant? By the time that game started, the title had already been guaranteed for Nebraska. Bottom line is that in any bowl game, you're either playing for a title or you are not. That was true before the playoffs.
In 94, we still had the chance to go undefeated and voters determined the winner not a playoff. An official tournament to declare a winner changed everything. If you don't believe me see when opt outs started.
Even Saban has discussed this. If bowl games mattered no one would care that we weren't in the playoff over Ohio State and Washington but we all know better