I would love to install the Minecraft 2.0 version and explore it for myself, but after following multiple tutorials for installing it on early versions of the launcher, it seems that none of them work for the new launcher. Is it still possible? If so, how can I achieve it?
Yes it can...
but you will have to download the JAR and JSON files and place them manually in the
.minecraft directory, also the download links don't point to the Mojang servers so it can't be guaranteed that the download source is safe.
Download link is in sidebar on wiki page https://minecraft.gamepedia.com/Java_Edition_2.0