You gotta start somewhere. A2 is a perfectly communicable level, achievable for most (dedicated) people in most languages in a handful of weeks-to-months, but anyone thinking it's 'fluency' is kidding themselves. It consists, or seem to consist, of stock phrases because you know only about 1000 common words, so there isn't much you can do with it. Frankly, looking down on grounds like not enough effort for my taste is pretty shit. Then again, most natives kid themselves about their own mastery of language, usually unaware they are not-so-merely more natural-sounding B2s, but nowhere near what linguists call 'proficient'. Contrary to annoyingly many anglophones, C2 doesn't mean "any about-average native,", but "can go to a post-graduate program and be stumped no more often than a native with a comparable background." Just for kicks: when I was preparing for CPE/C2 three years ago, examiners teaching the course warned me of possible point cuts for things like 'mixed british and american spelling' or 'confused deposition with affidavit', which I'm curious how many natives could explain without looking up.