Yes, query strings often enable useful features! But Chris's post, "no unauthorised query strings", is only regarding third parties adding them.
replyBut... like... that's a weird hill to die on.
reply> If I wanted to know I’d look at the Referer header; and if it isn’t there, it’s probably for a good reason. You abuse your users by adding that to the link.
The reason is that the referrer headers are a usability and privacy nightmare. It's weird for the author to jump to such a conclusion.
This referral information is being done purely as a courtesy to the webhost. If we imagined a world in which ChatGPT or Wikipedia launched massive hugs of death on referral links without attributing themselves, that is a much, much worse outcome.
There's a referrer header, if the client wishes to send it. If they don't, the "courtesy to the web host" is done at the expense of the client. This particular web host takes umbrage at other sites taking advantage of their clients that way, which seems reasonable to me.
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replyA relatively minor impact concern is that query strings create a new cache entry both in the browser and typically on server-side caches unless configured otherwise, so you might want to use URL fragment parameters if the parameters are only used by clientside JavaScript but the server response is the same.
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