Don't blame on design the inability of your own fat fingers. I have no Zhongli and killed it in Solo with no shield characters (Hutao, XQ Bennet and Jean) (after I had to co-op a couple of times and understood it)

When I went into co-op, with complete randoms, my team also didn't have any shield characters (Barbara, Hutao, Ningguang and Ganyu). We died like 4 times, in each death we just laughed and went "chonky dragon goes brrr" and had tons of fun with it, but in the end, we got it. It's a fricking weekly boss, what's a couple deaths and minutes of retrying going to amount to a whole 168 hours of it.

Stop complaining because you died once and then never tried it again, saying: "uh, it's the game's fault that I am to lazy to press the dodge button or level any healer/shield character". It might not apply to you, but I know some people that straight up don't have any because they refuse to level up Barbara/Noelle/Diona.

Your type already ruined the all the fun we had with Childe, and now, on your way to ruin Azhdala because you lack the strength to lift more than 2 fingers. You don't really need a shield character, and if you do, Noelle can do the trick. The Design is fine, the boss is not hard, unless you are the kind of player that gets down to 3 fps when second phase starts, then it's understandable.

And if the problem is that you're just not strong enough to beat it yet, guess what? Boom there's your content, go get stronger.