Can everyone just stop saying this is the Dock, it isn't. The Dock was where you could put your favorited apps in, it wouldn't change unless you manually added or removed apps from it. The new App Switcher is recent apps, it will add any app you use, then you have to go in and manually remove them each and every time if you don't want them on your list. It also saves them in order from most recent, again different than the old Dock where you could change the order yourself.
The new changes and the complete deletion of the Dock are atrocious, but that's Apple's way of making things more complicated by making them more simple and taking away choices. I just found out today another Achilles heel to making widgets swipe up. Swipe up does not work inside of apps, at least it didn't work inside of my fitness app where I was trying to access my timer widgets while working out (since my old method of accessing both apps from my Dock is now gone). I'm not sure if this is something app makers have to implement, or if generally swipe up for widgets isn't meant to work inside apps.