It's a good question, but new people being onboarded are not going to know about the change in APR so that doesn't really matter - as for those of us here now, I don't think it's such a bad thing but I can possibly see people not being too happy about the 10% decrease to author rewards. However, side this up to any other blogging platform and you're still getting paid to write here - not like any other social media so I don't think that anyone can actually justifiably complain.
As for your last question, well at the price Hive is now, every little bit of extra income I scrape together, I put into an exchange and buy Hive. It's not here staked yet, but I still think it's a steal at the current price.
The ones who are greatly affected are those authors that earn a lot from a single post. Not the bottom feeders that rake in 0.1$ per post which half of that value is shared to curators. I'm not going to lose sleep if I knew 0.01 Hive got redistributed to other stakeholders. But for people who are used to generate high payouts per post, that takes a significant amount of their monthly income which their life may be dependent on.
It took me a while to grow out of the freeloader phase wherein I need to have some skin in the game to care about what happens here. Then what followed was getting interested in governance and developments. Habits became more than just shitposting. I think majority have less motivations to buy Hive and increase its value if they are freely handed the value by current bagholders who take in more risks when they can just exit without the risk.