I was trying to remember the name of that Kona bike! Thanks.
I looked at the Giant, Norco, and Kona bike manuals online. They all seem to use the 300lb rider weight limit for their bikes - some of them 355lbs including cargo. Not sure if Giant or any of the other big manufacturers build anything for heavier riders.
All weights specified in the manuals are for their intended use. I don’t think they say anything about weight limits if a bike is used less aggressively than its intended use - e.g. taking an All-mountain bike and then using it on a road - I would think that it would be able to support a heavier load if used less aggressively(?)