Are the practices that the author wrote about common? Judging from comments, frameworks are more common than plain JS, and half of those using frameworks don't

Are the practices that the author wrote about common? Judging from comments, frameworks are more common than plain JS, and half of those using frameworks don't fully understand what's possible without one. I think it's fair to say a practice is niche if you don't see it anywhere and appear to be one of the few talking about it. Let's see your website.