It takes TONS of supplies to be able to effectively use a fighter fleet though. Compared to ships, fighters are much less powerful in a non-group situation, meaning unless you have a map with several comm relays, you will be at a significant disadvantage.
Once you are fighting fleets of a certain size you always have at least 4 capture points on the map. I can reliably get 3 with little trouble.
But that's not really what I'm getting at. The fleet point advantage can be really good, and I stack in 3 interceptor squads for the purpose of capturing three points right off the bat, but while it costs a lot of fleet points to maintain repair on my squads, once a fighter squad is damaged it comes back for a very quick regeneration to 100% and off it goes again.
It means that I can trade supplies for fleet points. If I carry enough supplies and keep my carriers away from the front lines, I can essentially replenish my fleet nearly infinitely. As others have stated, it's because the AI isn't effective at countering them, but the flight deck fix from last patch has made it much more effective at repairing in battle, and I am now noticing that all fighters are being repaired to 100% after the battle automatically, which was not happening before. So I have a fleet at 100% right away instead of having to wait for fighters to be repaired like other ships.