Reddit accounts are being sold online all the time.
Creating bots is easier early on, when the securities don't exist yet. Creating an army of account is currently cheap, but may be less so in the future. They are just betting that their army of accounts are going to be valuable in the future.
Settings > Instance > Disable instance proxy.
LibreTube is meant to be used with a YouTube piped (which is a different thing than NewPipe) instance, which proxies the video stream. It's very nice in theory, but in practice, the instances get blocked constantly. Disabling this option will make your device connect directly to YouTube (which leaks your ip address to YouTube) and make it work the same way NewPipe works