Seriously Apple, what the hell?
I've been a mac power user and software developer for over 20 years. And today, I had to google how to get the bluetooth icon back into the top bar. Honestly, I should not have to do that. No one should have to do that. You should be able to merely go into System Settings, Click Bluetooth, and the setting should be there.
But no, not in an Apple operating system. You've buried this setting under Control Centre. Why!?
Get your shit together.