Ive been playing on a superflat world for well over 2 months now. I was able to get good diamond armor and tools from trading. I was able to get a cobble gen with some lava from blacksmith, I got a good tree farm from saplings, I used villager beds to eventually get netherite, plus i made an iron farm. I build a large 100x 200 fence around two villages that were close to each other. I had to find a ton of blacksmiths and lava sources in order to have enough obsideon for enchanting table and nether portal. But i did it.
See if you put the time and effort into it, superflat worlds are easy. Plus its great for building.