I understand why the author thinks this is a good idea, but 404 exists for a reason. Literally "Not Found", not "I will guess at what you are looking for". The "implications for SEO" will almost certainly not be "positive" for quite a few reasons. As a general rule in my experience and learning, Google's black box algorithm doesn't like anything like this, and I expect you will be penalized for it. There are many goo…
This is absolutely right. The duplicate content flags alone will cancel everything out. I don't understand why people don't just read Google's own published guidelines ( https://developers.google.com/search/docs/fundamentals/seo-s... ) on how to properly SEO one's site. It's not some dark art. Google themselves tell you exactly how they index and why. All you have to do is read the guidelines.
This reminds me of something similar in the mobile world: Apple's App Review guidelines[1]. They're surprisingly clear and to the point. All you have to do is read and follow them. Yet, when I worked for an App developer, the product managers would act as though getting through App Store review was some kind of dark wizardry that nobody understood. Them: "Hey, we need to add Feature X [which is clearly against Apple's guidelines]." Me: "We're going to have trouble getting through app review if we add that." Them: "Nobody knows how app review works. It's a black box. There's no rhyme or reason. It's a maze. Just add the feature and we'll roll the dice as usual!" Me: "OK. I've added the feature and submitted it." App gets rejected. Them: "Shocked Pikachu!"