Yeah but that extra brine waters down the flavor of the whole jar. You're trading floaters for weaker taste. I always pack them tight and leave just enough brine to cover, then use fermentation weights. It keeps everything submerged without diluting the spices and vinegar kick.
But seriously, does it matter that much? I tried weights and no weights, and both batches turned out great. The flavor difference is tiny to me. Everyone has their own method, but it's not worth stressing over. If no weights works for you, just roll with it. Fermentation should be fun, not complicated!