Is a backstory really needed?
Khamzat has been a Twitter warrior for the last 3 years or so. He talks a big game but doesn't fight much.
That alone is sufficient for Alex to have that opinion if he wants.
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Khamzat called out Alex as I recall, and short ish notice for Alex who I think had just fought at 85 with his big cut so Alex said sure, I'll fight you at 205.. (if you want me to fight in short notice after a big weight cut)
After that if Khamzat didn't actually want to fight he should have kept his mouth shut. Or negotiated, asked for 195 or something.
Khamzat basically called out a more accomplished more active fighter and said "fight me on my terms" which is dumb because he didn't have much to bring to the table for that particular negotiation.
Nothing wrong with calling it as you see it.
Fair play to Alex here.