Yep. It was already like this when I got an iPhone 5 and as far as I know it's still the same on the iPhone 13.
While these days we have faster technologies, bluetooth is available on most devices. It's like SMS, but for file transfers. Another reason for me not to buy iPhones.
File sharing over BT is insecure, obsolete, and not widely-supported. It's better to deal with reality that BLE-capable apps and cloud apps are universal replacements.
Can you mention one main stream phone or tablet released in the past 10 years that doesn't support bluetooth file transfer? Android certainly supports it and I also remember using it on Windows Phone. As far as I know, only iOS (and iPadOS) doesn't... a bit weird as Apple supports it on macOS (just tested by sending a photo from my 2021 M1 MBP → Android phone).
Anyway, is it the best option available today? No. Speeds alone are a good reason to avoid it. But Airdrop only works with Apple devices and Nearby Share is for Android (and apparently Windows in the future[0]), so the alternative is either a cloud app or some cross platform app which both sides need to install (who wants to do that just to transfer a file?).
While these days we have faster technologies, bluetooth is available on most devices. It's like SMS, but for file transfers. Another reason for me not to buy iPhones.