if they didn't want people to speculate on the details, they could have released a more professional message instead of what they have here.

seriously the level of unprofessionalism at this scale of the market is shocking. you can't imagine e.g. Nvidia putting out a press release like this when they drop a vendor

Sparkfun is publicizing the enforcement of their code of conduct, making it a public issue, which is a bizarre position to take. Usually, when there are violations of things like this, you don't discuss it outside a need-to-know basis.

They are inviting us to ask for the tea.

given that they didn't even present actual violation in the blog it is very suspicious

I'm not involved with this specific case, but in general it's annoying when people blast some vague passive aggressive accusation publicly, but then retreat behind "it's a private matter! Respect our privacy!" when people are then naturally are interested in what happened. It's frequently cover for a weak argument.