Earlier quoted context omitted.
...or the signatures are fake? Petition fraud. Happens in US too, see net neutrality.
Or coerced. Note that the coercion doesn't have to be blatant or explicit. China said some fairly threatening things about Hong Kong, and some number of residents may have decided that, for their own safety, they needed to signal that they were in support. What they actually feel or think may be different.
>> Last Friday Leung Chun-ying, Hong Kong’s pro-Beijing former leader, demanded that HSBC state its position after enjoying privileges in the territory that “should not be taken for granted”.
He also warned that it could “be replaced by banks from China or other countries overnight”.
In a Facebook post he wrote: “We need to let … British companies such as HSBC know which side of the bread is buttered.”