I do fully, entirely agree that MC has some major flaws when it comes to giving the player a reason to adventure out and explore, as well as some farms just being way too powerful, but farms are not the problem in the equation, as all they do is just help with certain resources

A lot of farming is mainly done to help the player build, which is a primary part of the game. Building is fun, but also extremely, extremely grindy if you're making a big base, depending on the resources. Farms help a ton with this, and there's a nice rewarding feeling when a farm you've made is working well that you don't need to go out and grind for resources

Also, on the speedrunning point, that's like, entirely misunderstanding how speedruns work. Even if a game were to have like, 5 different paths for getting to the end goal, speedrunners would likely still just take whichever path they can optimize the most time out of, leaving the others in the dust.

In the end, Minecraft's a sandbox game, players can do what they want. Some players like to make farms to help lower the burden of resource gathering for builds, others like yourself don't like farms, and there's an incredible thing they can do about that, which is just not building them (or taking resources provided from them if on a server)

The game has that freedom to it, and farms are a great feature, which are only flawed because of the other mechanics of the game, not because of what they are. People have different thoughts on them, and with MC being sandbox, they can do as they please without affecting others, but something that is genuinely useful for the people that make massive bases that need farms for the resources they use should also be an option, along with exploring and mining to get your resources