You can’t complain about the way you believe someone is if you act the same way, it’s hypocritical.
Yes you can, if they are the President, or the Prime Minister. I’d like to think the leader of a country (or even the most important country) was smarter, more decisive, more tenacious, kinder yet sterner, always informed about all aspects of word affairs, more learned, fitter, happier, more productive etc than me, or anyone else here… but we both know the current Prez is not. You might be content to give him a free pass for these and other character flaws but don’t expect everyone else to.