It's pretty much as Hykal said, for the vast majority of fans. If the devs would just drop a twitter post or something every few months going "game is real guys we are making it", then 99% of the fanbase would be completely satisfied by this and that last 1% wouldn't be worth paying attention to because every fanbase has their rabid outliers we all point and laugh at for being massively entitled. Just look at Deltarune having massive spaces between each chapter release - nobody cares that it's taking so long because Toby Fox pops up every once in a while to go "game exists, we workin' on it, here's a progress update maybe a bonus of some unused/scrapped music tracks".
Instead, Team Cherry is pretty much entirely radio silent, to the point that they have a PR Manager who must have the absolute easiest job in human history because when you check their twitter account it's just reblogging fanart or other metroidvania news every once in a while, not a spot of Silksong news or communication to be seen. Then one of the devs decides to vaguepost about "oh something big happening tomorrow" which turned out to be entirely unrelated to SIlksong, and well.
Personally, I just roll my eyes and get on with my life and will continue to not think about Silksong until the next time it gets mentioned, and I absolutely think there's a chunk of the fanbase going far too rabid that needs to Get Some Help and Touch Some Grass. But also, I totally get why so many fans are disgruntled over the complete lack of news, and why at this point it's boiling over from clown makeup jokes of "haha Silksong totally happening in this gaming direct frfr" to active hostility and dislike. Seriously, we live in a digital news age where it takes all of two minutes to post an update every few months to keep people satisfied, we even have proof that if it's negative news like Metroid Prime 4 being basically scrapped and rebuilt then most fans will totally understand. So, what exactly is stopping Team Cherry from doing that much? They could probably spend less time on it than I spent typing up this very post.