That used to be true, but wasn't the case of the web designer who didn't want to design for gay weddings a bit different in that there never was a case? There was no gay would be customer. No one sued them, no damages happened - yet the supreme court heard the case.
Hearing cases before any lawsuit or damages occurs occurs in various cases; they're called (I believe) pre-enforcement challenges. In the case of an argument about whether a law is unconstitutional, a pre-enforcement challenge is you saying unconstitutional law is preventing you from doing what you want, and needs to be struck down so you can do it. There are, of course, various restrictions on pre-enforcement challenges, but there is nothing wrong with bringing a challenge to a law before there is any lawsuit or damages. The ability to have pre-enforcement challenges is actually really important, because otherwise the only way to challenge a law as unconstitutional would be to break it and hope to heck that the appeals court agrees it's unconstitutional, because otherwise you'd have to suffer any penalties for breaking it.
The Supreme Court's conservative majority has ruled a Christian graphic artist who wants to design wedding websites can refuse to work with same-sex couples.
www.pbs.org
In filings in the 303 Creative v. Elenis case is a supposed request for a gay wedding website—but the man named in the request says he never filed it.
newrepublic.com
So the second link does refer to something that happened in that case, which is that it was claimed (as evidence that someone wanting her to make a gay wedding website, meaning it wasn't just a hypothetical it could happen) that someone
did contact her about it and wanted a website made for a gay wedding. Much later on, after it had gone to the Supreme Court and arguments had been done, a reporter looked into the legal documents and thought to contact the person, as their contact information had been given... apparently no lawyer on
either side had bothered to. Anyway, the reporter discovered that the person who supposedly contacted them about it turned out to not be gay and to have had no knowledge whatsoever about making such a request. This information only came out very last-minute, literally the day before the opinion was issued. Where the request came from is unclear; there have been accusations that it was made up by the plaintiff or her lawyers, but I think it's more likely that it was just some troll who had noticed the case and gave someone else's contact information.
But this ultimately doesn't really have an impact on the case. The case had gotten started in the courts before it was ever received or mentioned in any court filing, and its existence didn't really change anything in the Supreme Court opinion. It was really just a minor piece of evidence.