Lossless is understood to have a bitrate of at least 1411kbps, or about 1.4Mbps.
Theoretical sustained bandwidth capability of Bluetooth on the 2.4Ghz spectrum is 1Mbps, but in practice it’s a chunk lower in part due to overhead.
Even if we assume if you could just cram a higher bitrate through a smaller bandwidth (spoiler, you can’t), everyone would be up in arms about Apple lying about lossless and class action suits would ensue.
That said, you can’t. This is not like your internet connection where you’ll just be buffering for a minute.
As for what is and isn’t perceptible, I think you’re mixing up your tonal frequencies with your bitrates here.
For one it’s just technicalities for another it’s the distinction between a company going out of their way to block repairs or a company just not caring and mainly focussing on their own repair process.