I’ll just leave this here: https://puri.sm/shop/librem-5/
...also the fact that they have boot up sound means that they are not focusing on user experience and needs, but on copying any and all features from the current phones :(
Where did you learn that? I 1) didn't think they did and 2) even if they did the bootloader should be user replaceable. I could be wrong though..
fun fact, it was originally included in older phones as a marketing gimmick, a way to generate more revenue. someone at nokia or siemens had the idea to sell it to operators the same way as an Ad spot is sold. telco operators paid manufacturers to have their jingle there instead. and in markets without buyers, they put in the manufacturer jingle as a placeholder.