Well yeah, until SSDs can match HDDs in price-per-gig there will still always be a place for HDDs. You don't really need SSD's access speeds for many things that tend to take up large amounts of space like video, backup images, photos (photos taken when actual cameras and not phones can take up quite a lot of space), music libraries, etc that HDDs are great for.
And even then, there is the issue of long-term cold storage. NAND can lose it's storage if not powered on every now and then. The time varies greatly, some as short as 6 months (though that's an extreme) to a few years, but I have had several SD cards that I had not used in years erase themselves. HDDs meanwhile I have had ones nearly two decades old still have all their data when I booted them up again. We are rapidly losing options for long term data storage/backups for consumer use lately.
the cheapest 1Tb SSD already cost the same as the cheapest 1Tb HDD
That's because buying something as low-end as a 1TB HDD is horribly price ineffective, once something gets old/obsolete enough like that prices start to go up due to it's lower profit margins. It generally costs an extra $2-5ish for a 2TB model of that same 1TB harddrive. Compare the price of a 4TB NVME however, those are around $170-200 right now. For $180-200 you can get a 10TB HDD. And that is WITH the rapidly dropping SSD prices, 4TB SSDs were nearly double that around a year ago.
Nobody buying a HDD today is buying something as small as 1TB, they are for large amounts of storage that don't need fast access speeds.