Oh hell no.
Mandolin is one of the coolest things ever.
It really depends on what you need; consistent thickness slices of stuff? Mandolin is your friend.
Zucchini & cucumber slices, even potatoes.
When you get down to "there's only 1 or maybe 2 slices remaining", STOP.
Go buy another damned zucchini. It's 75 cents. Removing 1/4" of your finger will cost you A LOT MORE.
They're terrifyingly sharp, you could very quickly and easily remove a part you'd prefer not to remove if you're not careful.
Instant Pot is ++good.
I'm a huge fan of crock pot cooking; throw shit in before I leave for work, dinner's ready when I get home.
We got ours a couple weeks ago, along with a recipe book.
In many crockpot recipes, you brown the meat in a pan before putting into crockpot.
So another thing to wash.
The Instant Pot has a Saute setting; you can brown the meat in there, then add other stuff..
Other than measuring devices, the stainless steel pot is the only thing to wash, and I just throw that in the dishwasher.
We've had quite a few dinners from there; tonight we're having a Tuscan Sausage & Kale stew from the IP.
In a crockpot, this is about 6 hours.
InstantPot, about 30 minutes.
Pot Roast on Friday night, about 40 minutes total using IP vs hours in crockpot.
Get a recipe book for your IP, Howski.
Plus, if you're working from recipes, the weekly grocery trip is easier.