>>1054331Depends on what you're doing.
Long distance racing? Bikepacking setups are more aero, and generally a little lighter.
Riding almost exclusively offroad? Most pannier mount systems aren't secure enough to keep a heavy bag attached when you're descending fast on the rough stuff. In spite of your gif, bikepacking stuff is generally more secure on the bike. Or just be choosy and buy appropriate panniers.
Don't want to stress over minimalist packing? Want to have a lot of flexibility? Want to be able to just stuff your shit in a bag instead of carefully tetris-ing it into place every morning? On a budget, and you don't want to spend $$$ on low-production-volume, bespoke bags? Want to be able to bring the sleeping bag, sleeping pad, tent, etc that you already own, instead of blowing perfectly good money on r/Ultralight/'s boner fuel? Racks and panniers, hands down.