I would.
To me, if I were playing a few rounds before the mass smite, I would feel that this is a relaxed server and I would more or less 'adapt' to it. And when the mass smite comes along, I would probably be a tiny bit bugged (like really, really small) but it's something I would look over. Now other people, I can't vouch for. I personally love it when things are chaotic on servers. But I can understand why people wouldn't like it. Yes, it would seem unorganized, and yes, it would seem irresponsible of the staff to be using their powers like this. But it's all part of the fun.
And from an old member's point of view, it was very reminiscent of back when I used to play in 2011 or whatnot. I remember staying up long nights laughing my ass off at CTs freekilling their buddies then slaying themselves. And personally, I think keeping Late Night instated is well worth the risk of scaring off players, just in the simple hope that there are more that like chaotic nights as much as I do.