Disabling a button is not up for argument. You are entitled an opinion but you are wrong. As mentioned in the article, it becomes invisible for screen readers s

Disabling a button is not up for argument. You are entitled an opinion but you are wrong. As mentioned in the article, it becomes invisible for screen readers so, no, hard stop on its usage. From a usability standpoint, an available button gives you the opportunity to validate a users field, shortcut someone to that field and if you use form properly, allow the user to go on to the next invalid field with the enter key.