It's no big secret that buttons are just a fancy UI for sending forms to the NS server, which is why often when using scripts I will forego the button-pressing entirely in favour of the post being sent itself (obviously within NS script regulations). However, I do make an exemption for N Days because I believe it was mentioned at some point that we shouldn't be doing anything that could potentially bypass reCaptcha (and therefore I exclusively stick to pressing buttons onsite, whether through keybinds or through clicks).
However, looking back on this decision, it would indeed be nice to have an official documented ruling on whether we are allowed to use GET/POST requests on the site directly during N Day e.g. to launch a nuke by POSTing a form or using a GET url, and how that would affect the need/ability to answer captchas.