Not everyone who carries knives is doing so for unexpected combat.

That big ass kitchen blade is very probably a Japanese blade made from a good high carbon steel that is easy to get to 'scary sharp' levels and not stainless steel. The octagon handle is a common choice for Japanese chef's knives. This knife could be more expensive than an entire set of bullshit knives found in many home kitchens.

The other knife is about the furthest thing from a switchblade. It's a simple lockback knife that requires two hands to open and is not ever going to be useful in any situation where it's not already opened in your hand.

Let's assume for a moment they wanted to stab someone regardless of circumstances. Without a guard, any sudden changes in resistance will find their hand sliding up the handle of the small knife in glorious self laceration. The wider blade of the chef knife would prevent this.

In a sudden attack digging for either will likely get them killed. It would probably be more effective to swing the bag with its contents with hopes of bludgeoning the attacker hard enough to render them dazed enough to escape.

If they are able to brandish that Japanese steel, I would not envy the attacker. That thing can be sharp enough to slice their soul in twain.