If you can only install softmods you will not be able to crack the Switch to install Android on it. If you read the article it goes into detail about how only G1 Switches can actually achieve this because they are not guarded against the Fusée Gelée exploit for Nvidia Tegra processors. It continues to point out how Lites and OLEDs need to have custom soldering done for this to even work.
That’s what the original mod for switch is called, soft mod.
By restarting you either drop into a “launcher” that gives you various options including booting into the original OS or your modded OS.
I set mine up so if it restarts it always goes into the modded OS. Many people have theirs set up to go to the launcher, instead. People usually boot into the original OS if they want to play online.