I think some don't care and will continue to do what they do because they can. As more whales power down during future bear markets and move on others who are more active on the platform will slowly rise up and won't support the "old dogs" stuck in there ways.
One of the reasons I've put delegating to new projects on hold is because I want to learn how to better my curation rewards on people whose content I read daily, but also provide them with bigger upvotes and be able to upvote more and more content producers that do a great job on here.
Yes OCDB does this in a way for me automatically, but manually currating forces me to find newer people to follow and support that might not be on the OCDB whitelist or just not want to use bots to vote on there content.