I’m pretty confident that none of you would actually show any of the bravado you recommend to others in real life. Because you would be daft to do so. You should really give more practical advice rather than projecting on others what you fantasise about doing, but know you never would. Look up living vicariously.
Which bravado is that? I've had to manage, coach, performance manage and ultimately discipline more than one manager with your attitudes in my time. The ones who improved (and who ultimately improved the performance of their team by being a better manager) were those who were able to muster a small amount of self-reflection, didn't think staff were at their beck and call because they were So Terribly Busy And Important, and were willing to listen when their shite behaviours were pointed out to them. Ultimately, some of the managers I managed weren't prepared look upon management as a vital skill that needs to be constantly worked at and taken seriously. They were invited to work elsewhere. As my career had progressed, I've been fortunate (and skilled) enough to be able to pick and choose employers who take good management as seriously as I do.
So here's my practical advice to you: think about treating your staff with respect. That means not just respecting but protecting their non-working time, including from themselves. That means understanding that what you see as trivial is actually important to someone else, and that your view of it is no more valid than theirs. That means agreeing clear expectations of your staff, but also agreeing with them what they can expect of you - agreeing, not dictating. It also means never, ever apologising insincerely.
But I suspect you're still caught up in the fantasy that your staff exist at work only to make your life easier, and if you can save yourself two minutes by taking up ten of theirs, or interrupting their leave, or being lazy, then that's fair game. Fair enough, a lot of workplaces encourage that mindset; overall management skills in the UK are notoriously poor. And as long as the labour market wasn't hugely constrained, bad managers had a lot more power to stay bad, despite their impact on productivity. Things are changing, though, so good people will have more options. Firms that treat people badly will be left with slim pickings (just ask the air travel sector...)
Enjoy your prima donnas though! I'm sure their behaviour has absolutely nothing to do with yours.