Part of the taunting now is in response to his past behavior.
Florian repeatedly refused to talk about his funding and insisted it was irrelevant (he has a history at lwn.net among other places). Now that we know the full context, people on the other side of that argument naturally want to underline it.
There are degrees of bias and as a reader why would you want to waste your time reading from a source known to have a massive conflict of interest?
I definitely appreciate knowing about a source's bias.