Kill confirms are interesting but I'm not positive how good they truly are when Pac-Man is really best at time-outs and winning through stuff like that. I agree they make him a bit better and I don't think he should drop at all, or if he has to by just a lil, but IDK how much Pac-Man's goal is to outright take stocks beyond maybe the first one.
I don't meant to call you out but...
Why do people keep saying this?
It's like when people said that villager and duck hunt were strictly campers (Sonic camps better than both of them, which is disgusting, but that's another story)
Pac-Man was built to be a toolbox and trap character. His camp game isn't solid enough to rely on for the entire match because his camp tools weren't built to keep the opponent out forever.
Fruits can be power shielded and half of them travel slowly, the trampoline doesn't matter againt opponents that prefer the air, and the hydrant can be blasted back in Pac-Man's face if he leaves it unattended and tries to over rely on it.
Camping with Pac-Man will only get so far in the long run since his camping game has consistent holes in it.
...But that's because he wasn't made to be a camper :O
If you study Pac-Man closer, you realize that his tools are supposed to work together to combat every situation.
Even his frame data suggests that he can do a lot more than just camp behind his hydrant and trampoline.
The fruit have different properties that help in a multitude of situations.
They can stop approaches, they can help you rush the opponent down, they can combo or lead to kills... and much more.
Combined with the hydrant and trampoline, you have legitimate, powerful traps. Each fruit has a different trajectory when pushed by the water, which can cover even more approaches and control space.
The trampoline resets the game to nuetral, but it can't help you camp for too long. Instead, you can use it for dangerous traps such as bouncing an opponent out of the spawn plate to steal their invincibility (this trolls olimar)
Or you can place it by the ledge to cover every get up option outside of jump (which is covered by fruits).
The hydrant and trampoline can even help you rush down opponents. The hydrant can be used as a shield if you jab it, allowing you to have a hitbox surrounding you as you go in, and the trampoline can be offensively when your opponent tries to undergo a defensive maneuver while you are in their face.
The properties of your tools allow for a multitude of possibilities, but none of them are going to help you win alone.
You can't play Pac-Man with one playstyle and expect to win, you have to constantly switch your game up and get creative to overcome every scenario.