If someone drove their car up to a group of people at a bus stop, leapt out, and beat them up, would it be reported as "a motorist ... seriously assaulted a group of people"? Would they be referred to in the headline or the body of the article as a motorist? If they'd driven on the pavement, would there be a note that this was an offence under the Highways Act of 1835?
Sure, there's nothing explicit that says all cyclists are to blame for the actions of this man, but there's plenty of labelling going on.
The report isn't "a man assaulted three people. He looks like [$photo] and he was riding a bike."
Instead, it's "a cyclist assaulted three people. He looks like [$photo]. He cycled on the pavement to get to them. He cycled away from them. Cycling on the pavement is a specific offence under $laws."
It's a peculiar approach to the report, and it reinforces the idea that cyclists are seen as an out group.