Not really. A lot of people at Google are on Macs. I think it's more that the Chrome team doesn't prioritize Java support, which I think shows their priorities are pretty much in order.
Second, even some Apple apps took some years to be released as 64 bit after the transition.
Third, it's not like 64 bit apps get some magic cookies and unicorn love. Millions of Mac users used 32bit Chrome just fine and didn't even know about it (being 32bit).