Why should it matter to a developer? They are supposed to keep working on their project regardless of the price, because they are the people who are "in for the tech, not for the profits". Or maybe it only applies to honest projects like Bitcoin and Monero, while ETH is just an elaborate cash-grabbing scheme?
I understand your way of thinking, and it absolutely makes sense, but it all comes down to the finances, and thus the prices of crypto. It's factual information that the bear market lead to less developer activity.
Most of the projects pay people in crypto based on the fiat rates, which means that the lower the price is, the more crypto you have to add in order to make sure your developers still get $5000 on a monthly basis.
I don't see how Ethereum is a cash grabbing scheme. The Ethereum ecosystem is much larger and more diversified, so it's not weird or surprising that the price matters. Bitcoin's ecosystem is more solid because it's way more simple.
I was going to say the same thing regarding the price. No one can be "in for the tech" only. People have families to support, and even if they don't, they need to eat themselves and also pay bills etc. I mean, of course there are rich people who theoretically could do it for the sake of the idea, but in most cases they don't have enough brains for that.
Regarding the Lubin's whining, I can't understand it at all. Below is a quote from the ConsenSys official site:
Our projects address every part of the Ethereum ecosystem, including: crucial infrastructure projects, developer tools, core integration components, services, B2C dapps, enterprise solutions, and many more platforms and applications. We have a robust education arm training developers and educating the ecosystem, a Social Impact group accelerating humanitarian efforts, and a media platform publishing news and thought pieces about the ecosystem.
They have their own team for the job, and if it's not effective enough, there's no one to blame except for themselves.